Recall Friend's a great power... when you're level 6. You've sort of outgrown it, and it's not completing your build much. At that level, you're better off with Maneuvers and Tactics. Assault doesn't help you so much, it's a pittance with Brutes on the team.
The Leadership powers will be useful in every battle, the Recall Friend only in the occasional circumstances. I don't see this as being that tough a choice when you think about it like that.
Assault + Tactics would work out best for you.
I'm a Sonic/Kin Corruptor. I've got 2 powers I haven't chosen yet. I mostly do SFs and TFs. I'm thinking either Leadership (maneuvers & assault probably), or Recall Friend plus something else. Since I only have 2 powers left I can't get the good powers at the end of the pools. I'm also wondering if any of the other mace powers that I haven't got yet are good. Any suggestions?
Here's the powers I've got now...
Villain Plan by Mids' Villain Designer 1.401
http://www.cohplanner.com/
Fstr: Level 48 Natural Corruptor
Primary Power Set: Sonic Attacks
Secondary Power Set: Kinetics
Power Pool: Fitness
Power Pool: Speed
Ancillary Pool: Mace Mastery
Villain Profile:
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Level 1: Shriek Empty(A)
Level 1: Transfusion Empty(A)
Level 2: Scream Empty(A)
Level 4: Siphon Power Empty(A)
Level 6: Howl Empty(A)
Level 8: Hurdle Empty(A)
Level 10: Siphon Speed Empty(A)
Level 12: Shout Empty(A)
Level 14: Amplify Empty(A)
Level 16: Health Empty(A)
Level 18: Sirens Song Empty(A)
Level 20: Speed Boost Empty(A)
Level 22: Stamina Empty(A)
Level 24: Hasten Empty(A)
Level 26: Super Speed Empty(A)
Level 28: Screech Empty(A)
Level 30: Inertial Reduction Empty(A)
Level 32: Dreadful Wail Empty(A)
Level 35: Transference Empty(A)
Level 38: Fulcrum Shift Empty(A)
Level 41: Scorpion Shield Empty(A)
Level 44: Focused Accuracy Empty(A)
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Level 1: Brawl Empty(A)
Level 1: Sprint Empty(A)
Level 2: Rest Empty(A)
Level 1: Scourge