My ideas.

[cybergoth]

More export types (.TIFF .JPG so on and on)

more import types ( Like above ^)

Small tutorial mode that walks new users through general things like brush creation.

Being able to undock tool sets would be nice for those of us with multiple monitors.

Maybe a community in program messenger to talk and connect with other artists for ideas and collaborations.

[bonnie]

File formats and tutorials are planned.
However we haven't planned the other features you described, but I note them.