What does GT5 need to maintain your interest until the release of GT6?
1: more tracks (real-world, fantasy or from previous releases)
2: a good livery editor
3: a more stable on-line environment
4: a fully developed custom track editor
5: new cars targeting important missing cars
6: full access to our garages, settings, GT Auto, and upgrades while on-line
7: a more complete set of on-line host controls and options
8: better AI & real races against the AI, not always just "chasing the rabbit"
9:
10: Nothing much. It's fine the way it is until GT6 is out.
All these things should be included in GT6.
Parts 1 and 5 take time, and they give us them whenever they feel like it. Hopefully big steps will be made for GT6...200_300 (fully finished) cars sounds like a lot but seems small by some comparisons. More tracks are absolutely needed.
Parts 2, 4, and 8 are probably unlikely for GT5. They seem like a lot of work and almost completely new. They can wait until the next release.
Part 3 might be tough. If they haven't figured it out by now, will they?
Parts 6 and 7 should be done, because it probably can be done easier than he others.
I would be very happy if we got parts 1, 3, 6, and 7 in GT5...I think the rest can wait. I'd like them, but I can be slightly reasonable sometimes.
That may not contribute to the conversation MasterGT, but there are some of my thoughts. Actual contribution? Others have covered things very well. Your wording looks good to me.
All I got is ...more RM cars (or TC, whatever they want to call them)