I know that getting a cell wall might result in a plant, but how would (for example) evolving a double membrane or a Silica effect the multicellular or other stages?
they wont, you can edit cells and tissues in multicell
also you can post questions in the quick question thread instead of making a new thread for it
I think the question what late game impact different membrane types would have on aware creatures for instance.
Didnt knew the quick questions thread existed, sorry