1. I actually thought that Merribit might finally understand the situation during Orga's speech when he said, "We've been fighting to survive from the start, for money" or something along those lines referring to child labour and how they're now
choosing to fight to survive instead.
2. There are too many Charcolate Man haters in here. I think his plan was always to destroy Gjallahorn because the organisation itself is beyond saving. Hence prodding Carta and Gali Gali, and turning Ein into what he has become. He knew that merely 'reforming' Gjallahorn wouldn't be possible, and the only way to fix it would be to break it apart completely and start from scratch.
3. I'm not entirely sure Gali Gali knows that it's McGillis in that mobile suit yet, I think it's likely that Charcolate Man was merely talking out loud in the confines of his mobile suit. I can't wait to see what happens between these two though.
4. I don't think McGillis would have put himself in a position to get smashed by Gali Gali and Ein, so I'm assuming he knows that he can defeat Gali Gali or at least bring him onboard with the plan. Although, it would be pretty funny if he was scrub-tier all along.