Vehicle situation is worse than Reach, which has got to crushing for people that really like vehicle combat in BTB Halo. I've never lasted in a vehicle not called the Mantis for more than 10 seconds. Even something like the Wraith, which was balanced pretty well in Reach, is now completely useless.
The vehicle situation in Infinity Slayer reminds me a bit of phase 3 of Invasion, only all the time.