I suggest people find the bits of the game they like and then stick with that.
That'd be a great idea, but I can't find a bit I like now. B-Spec was the bit I liked most... but now... *sigh*
I have the endurance races left in A-Spec, and the final 24hr race in B-Spec, that I am having to grind other endurance races to unlock. I am guessing that it will take about 15 or more, 24 hour La Sarthe races to get there. 15 days watching cars go round the same track... show me the person who considers that enjoyable.
In fact, show me the person that can justify sitting in front of their PS3, doing absolutely nothing but the occasional button press, for 30 days. Because that's what it would entail for a person to actively monitor 15, 24 hour, B-Spec races. Even that is a 12 hour on, 12 hour off schedule... for a game!?! The 24hr races are the wrong side of borderline irresponsible. The health and power usage implications alone, make them like that.
The restricted seasonal events are good, the unrestricted ones are as bad as the A-Spec events. The special events are merely mini-games, there is no substance to them, so they're pointless. The licenses are irrelevant for anything other than getting the 100% gold trophy.
As a game designer myself (for 25 years), I cannot begin to tell you how appalled I am at some of the design decisions in GT5. If someone can play your game, without actually being in front of their console, then your game is broken... that's a simple design fact.
All PD can do now is patch the game, and a game that needs patching, was unfinished when it went on sale. I'm just glad I didn't buy GT5 new, so they don't get the message that I think it's okay to release a game in that state. Buy GT6? Not for at least 6 months after release... if it ever gets released that is.