Sounds awesome, I'm excited for both!
I'll have to get my new PC settup and streaming, and play some metroid, I'll do a blind speedrun live for this hack. New editor sounds amazing, I was hoping for some minor new features, new items being the hardest and most exciting of them. It's amazing to hear something is working like this.
Can you create a feature that lets you edit the memory address values for some common values easy to change; if easy enough, possibly:
-Enemy health (allow for more than 1 missile) and damage
-Your health and damage
-Varia suit damage changes
-Missiles needed to destroy red/orage/purple doors
-Missiles per missile pickup
-Missiles given for each miniboss
-Damage for ice, damage for wave, damage for bomb, damage for screwattack
-Amounts given for health and missile drops
-Amounts given for health and missile drops from metroids
-Range sans longbeam
-Amount high jump increases jump height maybe
Would allow you to tweak values changing the default from say 20, to 25, pretty straight forward can't imagine it being too hard implement for most of those values unless they programmed them really funny.
I'd be happy to help beta test editroid 4.0 too. PM me if you want.