The haul from every seasonal is enough to cover the cost of the vehicle required plus almost maximum tuning, so the argument against using multi-million vehicles on the basis of cost is moot.
Definitely agree with this. I only do a race or 2 each night to keep the 200% bonus in effect and I can't spend the credits fast enough to keep from hitting the 20M limit. I own 1 of each premium car and so I just have to wait for the high cost cars to hit the used car list to burn through credits and not feel like I am wasting them each time I win a race and am already at the limit. I really don't like to buy multiple versions of the premium cars just to collect the same car in different colors but that is just me.
I would love to see some longer A spec seasonal races. 20-30 laps or at least long enough to have to pit and change tires. Not even picky on which tracks those races would run on. I just want to bring some strategy into play.