Staging needs improving.

My original post: https://www.simplerockets.com/Forums/View/3309 (Let me just say thanks to @mjdfx150529 for telling me I posted in the wrong place)

The current staging algorithm needs improving. Instead of sorting stuff between interstages, it often mixes half the engines into stage 1 or 2 and puts the interstages together. To put the salt on the wound, if you've sorted a 100 - stage rocket staging, don't add any parts, even ones that have no staging functions. If you do, the staging will reset and this can be a time waster if you're editing a rocket. I also want to be able to edit staging on the fly like in KSP, where as soon as you place a part, you can put it where it's meant to go in the staging. Possibly by making a toolbar where you can extend all the editor buttons at once and really micromanage your rocket, at the side like with KSP.