that's really fair, I was trying to make the game super hectic on purpose but i can see where introducing too many things at once could definitely be annoying to learning. My thought process was introducing a new "Bin" per level and having gimmicks / stage hazards for some of the levels like the spinning bin. if I took more time to work on it I would probably shift some of the stuff around and maybe space the gimmicks out by a few levels or something or an indicator for bombs like you said.
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yeah spacing the gimmicks would for sure help. i'd even say you can add the spinning bin together with another gimmick, but maybe one less dangerous, cause i think at least when it comes to bombs, they deserve their own level. though adding indicators for bombs could also make it all work instantly, i think, as it would make the bombs insanely more manageable.