been experimenting with making a tabbed interface for &half-edge ! It's just the UI right now, but this is one of those things that would make it feel a lot more modern compared to the big established modeling tools, where every time you want to open a new model, you have to decide whether to save or discard whatever you already have open. tabs like this would let you work much more fluently in terms of UX, something I'm prioritizing a lot with this tool!