Roll20's tile and token-system is pretty great. I have no issue with it. What I have had an issue with, is using it to build bigger, or more complex structures. The problem that arises then is a notable performance drop for a lot of users, especially those with lower-end PCs, as well as occasional lag, I've been told, due to a lot of tokens and such being loaded at once, and especially if dynamic lighting is enabled. What I'm suggesting here is a feature to copy a set area (preferably both a snap-to-grid option, and a free-hand option), which will have Roll20 copy the entire area (preferably within the selected layer, but that might be too difficult), and either let you just paste that area as-is as a single image file, or save it to your library. Changing out the previous area with this could be notably better, because the previous area could have ten-fifteen tiles or tokens, and changing it out like this will reduce it to that one. This would effectively be a quicker way of doing things than what I'm currently doing with the board I'm working on now, where I'm downloading all the assets I need, putting them in there in photoshop, saving it, uploading it to Roll20, then placing it again. So in short, a way to copy/crop a set area, and save that as a single image instead of a bunch of separate tokens and tiles stacked on top of each other, increasing perfomance for a lot of players on complex boards
