While true that GT5 will succeed and sell incredibly well with just the customizations from GT4, that's hardly saying much about the quality and depth of the game.
GT1, 2, 3 and 4 sold in ridiculous numbers. So obviously based on that and gamer reception, we don't need in GT5:
- Improved graphics over the level achieved by GT4
- Improved physics and sound
- Improved bot A.I.
- More than 6 cars per race
- Photo Mode, or at least improved Photo Mode
- Online play
- Drifting
- Weather
- Night racing
- Damage
- Any new cars and tracks
Amirite?
Now you're mixing everything just for the sake of argument.
Restating my point again:
1st - what I like and think:
a) I'm not
against visual personalization or liveries, (or damage for that mater). But I couldn't care less if they are in or not (some people don't get this...). I'm 100% in favor of parts/upgrades and performance personalizations.
b) It's not mandatory at all, or that relevant for a GT game to have the 1st (visual personalization), but indispensable to have the 2nd (parts/upgrades/performance)
2nd what I think will happen, despite what I like:
a) Visual personalization
if it happens it will be very limited, because it's GT. It's not a "core" feature, and to be included it would have to be done to a level of perfection it would delay the game even further. But you can always use other games to play dress-up and show off.
b) There are not that many people wanting hardcore visual personalization and even less using it (more than a couple of times just to see how it works, or just changing car colors). So putting liveries (and damage) in is just KZ listening to people whining and throwing them a bone, even knowing people turn it off most of the time (damage), and only a few are going to "waste" time playing with visual personalization, when there is so much to do in a game that is going to be as huge as GT5 is expected to be.
Again, the bottom line is that the game is intended to be the real driving simulator. Not a crashing simulator, or a visual personalization simulator. There are other good titles out there that do that, if it's that important to use them, then play those titles.
Those are "nice to have" features and added bonuses that would make the game even better, now in GT5 or in future releases, but the game would/will not fail without them. Far from it.