Thanks so much for the collapsable comments!
This increases usability a lot for long files!

Is there any way to set emeditor to always have comments collapsed (maybe per filetype setting)? And a shortcut to toggle them would be killer.

Also, one feature that is very useful is to have ‘manual’ fold settings.
In vim, this is done like this:
# this is beginning of a section we want to fold {{{
code = here () {

# }}}

then, pressing a shortcut on the area folds the section. The interesting thing is that the marks are in the comments, so other editors would not mind.