Hi Yullo, Are you on Mac or PC? I'm on a PC and if I've interpreted your requests correctly I think they would make nice feature adjustments. Regarding your first image, I do like the idea of being able to resize the panel on the right hand side.
In your second image are you asking that we could have multiple projects open and they would all appear in tabs, in the same way they do in Photoshop? Rather than opening in a completely new window? I think this would be a good option.