The man gets what Kamen Riders are...
So, show of hands. Who wants to see him take another go, with more freedom next time? Because... YEAH, any complaints you may have with Gaim and it's similarities to other works of his, you have to remember it's a first foray into an entirely different medium for him, so maybe he's just playing it a little close to the chest in order to make up for his lack of familiarity. I mean, in anime, you don't have to ever worry about actually BUILDING anything or things like "physically impossible."
Although, I don't really see how Insects would of worked with the Arms Change gimmick, without some really squicky body horror, but I do see how it could of worked in place of fruits in general, as a parallel to the elementary Invess or making a kind of plants vs. insects thing going on.