1. I've ideally wanted it to work with the native zones in windows, and possibly with powertoys' zones too, but they're not really well documented afaik and I haven't been able to get it to work yet. My plan was to just have it work like when you're moving it in windows, move it to a corner to snap to there, and if you hold shift it would place it in a zone.
2. Do you mean swapping LMB and RMB? It uses both mouse buttons so if you use Win+LMB/RMB for something else you'll need to change one of them to not conflict
I've also followed the same issue (and posted this there already too) but wasn't satisfied with any of the alternatives people suggested so I just made my own instead :)
I've used it a few times, but always had some issues with it and felt it tried to do way too much while not doing some obvious stuff like changing the cursors to reflect what's happening, but it is way more customizable than mine right now
I've used AltSnap but always found it a bit buggy and bloated with options, my project is extremely opinionated and without any configuration right now, but it changes the system cursors to match what's happening and works better with multiple monitors (you can snap windows between monitors)
I made an ahk version of this a while back :), but had some issues where a lot of game anti cheats started blocking AHK, so I've improved it a bit and made it a native program instead
I've also followed the same issue (and posted this there already too) but wasn't satisfied with any of the alternatives people suggested so I just made my own instead :)