I probably got some of the details above (Priority...) wrong. Sorry for that.
About the idea: in TeXstudioo you can close and open parts of code (see attachment-picture). Most of the parts I close are pictures and tables which can be closed for a longer time because I dont need to change them. So my suggestion is that this function stays permant, in such a way that the code stays closed even if Texstudio has been shut down and started again.
Get what I mean?