Well I still have Trans-Am. The speed is nice, better melee options (I think from gun mode, b2b (mode change) bcbbbbb is possible? Raiser sword could be good in 2v1 situations? Well when some glorious day, I'll get 4 humans to play, I wonder how useful Quantimization will be...
But yeah, don't have too much over Destiny in gun mode, except more Beam Rifle ammo I'm pretty sure.