I would have to agree. I like Invasions until you hit Stage 8 (4 Towers). The reason is: up until that point, not only are you getting Guild Rewards, but you are also getting Individual Rewards when you finish out each Tower Stage. Plus, the little bit per batrle rewards you get. Tower Stage 8 though, it just feels like a long grind, and I don’t really like that. All in all, Invasions are good, but could be better.
Raids, in that regard, are pretty terrible. Your “per battle” rewards are bad, plus you don’t get anything from beating the Stages, like you do Invasions. Your only “reward” is a stronger boss/team that’s harder to beat. Yay
Also, as a side note, I think in Invasions, one of the Stages should be renamed. It’s confusing (especially in a text based form of communication like this) to have both the Tower sections and Guild collections be called Stages. Just a thought.