Anyone saying speed is just wrong. You want speed on the rest of the team, B1 will want Offense + Potency w/ offense secondaries. B1 has the 6th highest base offense in game (unmodded w/o bonuses), Base speed is 157, take off 12 from g12+ and you're at 145 so only +14 speed from a speed set. B1 gets 15% TM whenever a droid ally uses an ability, that's plenty of bonus TM to make speed not the most important stat for him anymore. He won't be dazed too often (unless you're facing Logray or RJT who can daze w/o damage, but even then the rest of those teams have AOEs that will hit B1 and cause him to dispel all the debuffs) so he should be gaining plenty of TM and assisting a ton. Just stack him up with offense and put a potency set on him so he can land Target Lock with the AOE.