Updated list as follows (great feedback people, really pleased to see this being a useful thread for everyone involved):
Remaining issues from Sandbox testing as at 22.30 GMT 17/01/2013 (that have been identified and no fix specified as yet):
*Issue 16A* - When mail received, notification appears intermittent - in test of multiple messages, "You've got mail" appeared only once. No notification received when logging in and messages waiting.
*Issue 19* - Private league chat channel no longer alerts you when your current league match opponent comes online.
*Issue 21* - Encountered "Failed to create team" error, which I believe is due to the language filter (team was called Stuff It), team was created okay when name shortened. This error should refer to the language filter if this is the case.
*Issue 27* - Private league chat channel no longer alerts you when your fellow league members come online.
*Issue 29* - No notification received via PM when team applications received to league admin, or on acceptance by league admin.
*Issue 41* - After opening a private chat, which created a chat channel drop down list that was long enough to require scrolling, upon closing the private chat, the scroll bar disappeared, along with the private chat. However Public main channel also disappeared from the drop down list. Public could no longer be selected, scrolling no longer available and arrow keys only cycled through visible channels. When others spoken in the channel, the button flashed as normal, but still could not be found. Public returned on re-log or after entering a team window and so forth, so not permanent, but annoying.
*Issue 42* - When attempting to view a deleted team, the server returns with nothing, just doesn't do anything. Previously pop up message "This team no longer exists" used to be displayed to let you know that this was the case.
*Issue 44* - When leaving a match, the post-match statistics do not appear to be correct. Similarly the post-match MVP screen can appear incorrect. For example, played a game with a rookie team. 0spp on all players before match. MVP went to a Khorne Herald, who had also caused a casualty for 2spp during the match. MVP screen when selected showed him as 0spp, level up in 6spp. When I later returned to main window my team showed a skill up waiting for me - he had reached 7spp and skilled.
New issues for the "live beta" remaining as at 22.30 GMT 17/01/2013
*Live 3* - Applying to an open league that I use regularly, my 980 TV rookie team no longer has enough TV - I am assuming that the minimum TV has been change (but since I've lost my rights I can't tell). - Appears to be only an issue for some Open Leagues (Crunch Them All and No Bash noted specifically).
*Live 6A* - Equipment option no longer functional in leagues.
*Live 7* I've had a report in game that games that had been awaiting validation prior to the server transfer appear unplayed and have no score preserved from the migration. - In progress games not able to be migrated.
*Live 10* - Chat channel history cleared on log out, meaning if you log out then back in, the list of chat you had before is cleared. Previously this was not cleared on log out.
*Live 13* - Reinstated administrator rights, unable to dismiss team from league. Added a new commissioner and he was also unable to dismiss a team - seems to be a permission issue rather than a migration of permissions.
*Live 14* - Within Open league, when viewing Teams list (via Manage League only) team record appears to have been cleared - though it correctly appears within ranking and Play menu.
*Live 15* - Team Value Minimum and Maximum no longer appear as options for Open Leagues - presume this is a fix.
*Live 15A* - Minimum TV1000 appears enforced again.*
*Live 18* - Some users reporting connection issues when attempting to Spectate. This may be Port related. [Port 16965 must be opened]
*Live 20* - Chat timestamp no longer removable. [Patch in test]
*Live 21* - Previously Coach list in Community tab could be ordered A-Z, but coaches logging on after this ordering were added to the bottom of the list. Now the list appears to automatically re-order, adding these coaches in alphabetically order on login.
*Live 22* - Matchmaking/Challenge team preferences for match turn length appear to be ignored - several players reporting their 2min to 2min selections resulting in 4min turn matches regardless. [Patch in test]
*Live 23* - Reports of disconnection timer counting down from 1 minute instead of 5 minutes - this does not allow sufficient time for re-connection.
*Live 24* - Reports of a Cup play off match failing to go into overtime, but ending on Turn 16. Game should determine that match is a league play off and that a draw cannot occur, forcing overtime. [Patch in test]
*Live 26* - When completing a match, you are no longer returned to team management screen automatically to view the team.
*Live 27* - Pre-match screens no longer include player names when entering match at screen where opposing roster is viewable or during the loading splashscreen. [Patch in test]
*Live 28* - When viewing the match history for a team, all matches prior to the server migration are shown as having match rating 0 and 0 spectators. All other stats appear to be there
*Live 29* - Search functions appear case sensitive now.
*Live 30* - Auld World league default remains from testing.*
*Live 31* - Match rating and match crowd numbers of historic games not displaying on migrated game history.
*Live 32* - Match replay file no longer populating ui Match ID, required for confirmation of unique match replay and used in some private leagues for validation.
*Live 33* - Player account "Retrieve Password" functionality not returning emails to users.
*Live 34* - Public league rankings not displaying within league window.