I have given this some thought and here is my vision for Spec 3.0
Custom event creator for A-Spec and B-Spec
A new series on top of the Endurance Series which will unlock at level 30. It allows players to regulate their own events down to every detail. Prize money and experience points will be calculated based on the conditions set by the player and the distribution of these will support the performance difference adjustment bonus if players define limits for weight, horsepower and PP. Once created, the events will be listed as rectangular icons (3x3) similar to the events in the default series by PD (another page will be created if you exceed 9 events). Event icons will a have default look but these can be customized with images from the photo album and a variety of fonts and colours to specify the event name and character. Custom events will not count towards 100% completion and can be shared with friends. Players will receive a royalty bonus which varies depending on how well your friends perform in your event. This royalty bonus will be distributed with the daily login bonus.
Permanent online leaderboards
Adds a time trial icon to the GT Life screen. Record and improve your best lap time and compare your skills to players who lapped under the same conditions, i.e. filters for car, track layout, stock, tuned and tyres. Roughly identical to the leaderboard system known from GT5 Prologue but vastly improved in terms of features.
Online Phototravel lobbies
Similar to A-Spec lobbies but the circuits have been replaced by the photo travel locations and players can chat and talk while photographing cars together.
Online championships
Gives lobby hosts the ability to set up a series of races similar to A-Spec championship events.
GT Auto accessibility from online lobbies
Allows players to change oil, rims etc. while participating in an online room.
Free interior camera movement
Similar to the free camera movement known from the face tracking feature as the camera angle can be controlled freely in any direction with the controller. Default button assignment is R3 for 180 degree front view movement and R1 + R3 for 180 degree rear view movement.
More garage filters
Allows players to sort the garage view with more filters such as stock, tuned, mileage etc.
New phototravel location
A new scenery for photographing.
New selection of rims
Adds more variety to the current selection.
Nissan GT-R N24 Team GT-Academy '12
Class winner from 24 hours of NĂĽrburgring 2012.
Spec 3.0 intro movie
Available as a free download from GT TV.
Improved physics
There is always room for improvement.
Improved sound
Select premium cars gets a critical update (including custom exhausts on certain cars)
Improved tyre simulation
An adjustment of tyre longevity.
Bug fixes
A benchmark overhaul.