1) Did you like the OOTP 17 color scheme and use of team colors. If not, what could be improved?
Yes - would like to see better team backgrounds.. like having them change to the logos being used, I've changed mine and it would be neat to have the team background change as well. Not a biggie though.
2) How about the interface layout, is the upper area (info & navigation) easy to use and understand?
Yes
3) What interface quirks would you like to see fixed / improved?
Sticky sorting, come on.. it's about time this gets implemented. Each screen should remember what sorting I used.
4) Any feature ideas that relate to the interface which you'd like to see implemented (i.e. more hotkey support)?
I would like tabbed team systems. Your MLB team first, then tabs for all your minor teams. Might be a tough one though. 
Would be much faster to look at your teams though!
5) Which skin did you use in OOTP 17? Would you like to see an alteration to our usual default / dark / classic skin themes?
Normal OOTP 17 default. Would like to see more, more is better!