sorry for not answering earlier. TImes are quite stressful but now at least I could find the time to write an answer to your questions.
@Ulf: Thanks, I did not use the shape-background feature in a while and haven't noticed this. Do you know in which version this occured? I also noticed that, at least on my device, there is some issue with the area for repositioning the widgets. This might have the same cause than your problem and it's the next thing I am going to fix.
@Pastis: In which way do you mean "close"? Do you want to stop a running process or do you want to show the homescreen in the same way as it happens when pressing the home button? Also, do you want to close a specific application or "the one currently on top"? I think all these things could be realized (to some extend, there are always boundaries on non-rooted devices) but knowing your preferences would influence the order of implementing them
@gg48gg: I'm glad to hear that you enjoy the app. A gesture widget is planned. You are correct that if you swipe the background, it navigates from one layout to the next or previous. The new widget could be put anywhere with any size and you could use gestures (even more complicated ones than just one direction) to induce actions. Is this what you had in mind?
As usual, if anyone feels that I still owe him/her an answer to a question, please remind me. I'm never sure whether I lost an email or overlooked a post here or on facebook http://www.facebook.com/terRemote.
Best
Chris