Drag n drop UIs don't really help when you have too much dynamism (like "oh only have this button appear in these conditions", "do this here", etc). And I would

Drag n drop UIs don't really help when you have too much dynamism (like "oh only have this button appear in these conditions", "do this here", etc). And I would say that box layout offered by CSS is much nicer than the constraint layout system _when you have a lot of dynamism_. Like I wouldn't want to have to deal with an interfrace like facebook in native stuff. I don't think it's impossible, but I feel like it would require a lot more up-front design and correct engineering. You're right about XML being a medium, just kinda my memories of working with this stuff.