I realize it's difficult for a programmer to create a user-interface that is dumbed-down enough so that even the most clueless user can figure out how to use it, but seeing as how I have no idea what you just wrote and what it means, I hope you give us a chance to test this thing out along the way so we can let you know what is working for us and what isn't. You're obviously putting a lot of effort into this, Aino, and I'd hate to see it fail to meet your expectations later because you've made some false assumptions early on about those of us who will eventually want to use it. I'm assuming you want it to be useable by as many people as possible.
When you think it's ready, please put it out for testing like you did the previous version of EVE. Let us help you make this the go-to map-creator for Eufloria!