Don't have the codex to hand to judge if the librarian character is worth it, but a couple of librarians with the power that gives your units within 6" a 5+ cover save is a really good way of keeping your vehicles alive. The power that makes him strength 10 is also really good.
Go with a librarian furiouso with wings the the +D3 attacks power to that it can move fast enough to get into combat and adds to your psychic defence. Its got a better move so more likely to get into combat, your current dread can be avoided pretty easily
atm.
Just stick with 5 guys, no upgrades, in las/
plas razorbacks. I don't like give them anything as you rarely want to get them out, and when they do step out they generally die from shooting before they can say 'for the emperor'. If you play a lot of horde, then give them flamers. Plasma guns on the razorbacks means that your razorbacks are effective at taking out terminators and other tough units.
I'd go for Predators with lascannon side sponsons for heavy support; vindicators have a really sort range compared with the rest of the army and if they get a weapon destroyed result, which is really common, will be useless.
I did play around with
BA razorback spam a bit, but played at 2000-2500 points and can't find any good 1500 lists, but hears a pretty solid 2500 point list that may/may not help to get an idea of what I'm saying. Honour guard are there as I had a really big problem with counter assault playing razor spam and I allowed me to still have razorbacks!
HQ: Librarian, Sword and Shield, 100
HQ: Librarian, Sword and Shield, Melta Bomb, 105
- Honour Guard, 4 Flamers, Las/
Plas Razorback, 225
- Honour Guard, 4 Flamers, Las/
Plas Razorback, 225
EL: Furioso Librarian Dreadnought, Wings and Might, 175
EL: Furioso Librarian Dreadnought, Wings and Might, 175
TR: 5 Assault Marines, Flamer, Las/
Plas Razorback, 160
TR: 5 Assault Marines, Flamer, Las/
Plas Razorback, 160
TR: 5 Assault Marines, Flamer, Las/
Plas Razorback, 160
TR: 5 Assault Marines, Flamer, Las/
Plas Razorback, 160
TR: 5 Assault Marines, Flamer, Las/
Plas Razorback, 160
FS: Baal Predator, Heavy Bolters, 145
FS: Baal Predator, Heavy Bolters, 145
HS: Predator, Lascannon Sponsons, 135
HS: Predator, Lascannon Sponsons, 135
HS: Predator, Lascannon Sponsons, 135