Pro is a skill useful for players who make many rolls throughout the game. It can be used to maximize the use of other skills without having to resort to a team-reroll.
Strip Ball is an often overlooked skill as it is easily negated, while this is true I still see it as a vital asset to have for a few reasons.
Sure Hands really helps in a few different ways, makes picking the ball up easier, saves team rerolls and negates the Strip Ball skill.
Tackle is a skill that is useful on every team, find out why and who should take it.
Wrestle is new in LRB5 and probably has the most impact of all the new skills. Read this for information on when to take Wrestle vs Block.