1. interesting idea. Currently I just use prefixes on scene objects so I know what's what. obj_ is an interactive object, img_ is just a non-interactive image, anim_ is same as img_ but a non-interactive animation, poi_ is point of interest (can be examined), pos_ position of a character, exit_ I guess you can guess what that is for.
2. I believe you can drag the white squares. By the way, if you specify the speed in the properties tab, then go back to the character preview tab thing, you can click on the big red X button while footstep movement is enabled to automatically offset all movement to the speed value you specified.
Personally I would really prefer if movement, because it's hard to understand was changed to absolute pixels instead. Say at 100% scale the character moves x pixels between frame 1 & 2, etc.
1.-Yeah, I use prefixes too, but color coding would make working with them easier since you sort through them right away without having to read what they are, you could also color code objects that are made of multiple pieces to know what shows and what is hidden, or if you want to color code depending on interactivity, etc.
2.-Moving the white boxes increments or decreases the movement speed for each frame, so it's hard to guess how far the character translates on each of them since you also don't get a visual clue of what is going on.
Having the offset in pixels instead of speed would be great, especially if you could use the onion effect to help determine how many pixels you want to move the frames.