I can see where Jonny's coming from.
Gha (12pts) + 10 mice = 11 acts
4 Ugs/Mice/Brutes (12pts) +6 reinforcements = 10 acts
...is it really worth it to commit 12 pts to Gha, and to handcuff your reinforcement options when you only get 1 more activation out of it?
As I look at it, there are only 3 main reasons to ever use Gha:
1. in a droid-centric squad (double Lancer, Nute/Whorm, etc)...in such a squad, he's an auto-include because of his Rapport and Repair
2. it's possibly arguable that he's worth it when you want to already have 2-3+ mice in the main build and you also plan on nearly always bringing in max acts via reinforcements (for a total of 12/13+ mice)
3. sometimes it's handy when your reinforcement or reserve droids cost 1 less (ie, taking a Gammor BG and an R7)
I've seen Gha/Lobot/Mice in lots of mass-activation squads (which, alas, are still Tier 1
), but unless both players are going the max-act route, I think he's actually more of a hindrance than a help. And if they're both going for max-acts, then I don't want to either watch or play that game, because fodder-spinning is neither fun nor strategic in my books.