Let me play off of your meme word.
This is the mimesis I want to see forming in GT6 and 7. Maybe Prologue too.
PD is getting serious again, and GT6 begins to transform. Their prestige is on the line, and they pick up a big pair of gauntlets.
Bot A.I. gets a tune up. Physics gets a tweak, maybe a huge tweak. Tire modeling improves further, and tire wear becomes more realistic. Tuning matters much more. Sounds gradually improve. Damage modeling gets a boost, with more realistic consequences.
Arcade Mode gets a big overhaul, and more cars on track are just the start. New A-Spec events appear featuring all the tracks, and are more racing league oriented. New cars and tracks are offered, and the new tracks are integrated in those A-Spec events. More tracks feature time of day and weather. Longer events are included, with real endurance events. Pit stops now matter, and tire and fuel strategy plays a more integral role. Along with enduros, B-Spec returns. Online structure gets a big overhaul, with notes about features yet to be implemented.
The Event Maker, Race Mod and the Livery Editor come to the party. At some point, so does Course Maker II. Not as ambitious as we'd hoped on PS3, it's still a lovely improvement. The Livery Editor will allow you to make decals as well as full racing "skins" which can be shared or sold for game credits. Race Mod will allow you to make any kind of race car you want, including league specific cars, made to the specs of the league. The Event Maker is quite ambitious, allowing you to create a typical GT style series allowing you to race for cash prizes and cars, or a more simulation approach, where you race a series or a "season" as long as you care to make it, based solely on points. Street racing, tuner cars, league specific racing, selected tracks, selected cars from your garage if you want, even choosing the bots, it's all up to you.
Now comes the big Online Toolkit everyone has been waiting for. Club and League Builder allows anyone to create and manage a group, club, or full blown racing league, with defined rules, specs and allowed cars, which can be updated freely. Members can share specifically with other members items like cars, tunes, liveries, decals for cars, racing league number plates, Course Maker tracks and other items. The Event Maker allows the club and league masters to make anything from single events, track days, racing series and championships, all the way to full blown racing seasons.
A new section appears in the main menu: FIA GT. This is league based simulation racing. It begins in a small but substantial way with a number of racing leagues on offer. Join a league, race through a season on selected tracks following a calendar. You race for points and glory, not cars (and possibly not cash prizes, though there could be an economy). Make a run to the championship to reign in that league, then select another, as many times as you want. Online modes work with the Club and League Tools to form racing groups and memberships. PD and FIA hosted events feature unique prizes, along with a GT Academy-like chance to join a real world racing team.
Aaand... hopefully, most of this shows up in GT6. If not, I'll eagerly be awaiting the arrival of GT7/Prologue.