I have to agree with NQSS about the Lictor nerf. Chrome why did you do the opposite of what made the Lictor leap useful? The leap recharge should be several seconds longer and the range changed back to what it was. The Lictor already has invisibility, a skilled player shouldn't mind waiting in the shadows for it to recharge.
Also agree about the bolter for Veteran as it's usefulness is limited to having a long weapon when the plasma pistol runs out of ammo.(I don't last long enough as Vet to run of ammo) Get rid of it for now and give more reserve ammo to the plasma pistol. It should be the long range option when Vet gets future war gear like the relic blades and thunder hammers,etc. Assuming that the Vet is meant to be a Vanguard Veteran.
Genestealer does seem a bit overpowered compared to the Tactical as damage per second was high enough already by lowering the re-fire the delay in melee.
If your going to nerf Thope warpbolt the Warpblast should do more damage or at least make it take less energy. MediThrope should be hanging back with his team anyways so he shouldn't need anything to compensate.
Assault needs more than just the jump pack to put him on par with Teir 2 classes, such as melta bombs suggested earlier. As he is still very little threat to Warriors, at least to me because I have a mouse that can make my shots more accurate or make mouse sensitivity higher and turn faster than my enemy. If he's going to be tier 2 make him an Assault Sergent with plasma pistol combo with the same damage as Vet's old chainsword had or at least change his ranged weapon to a relic bolt pistol with a higher damage per second.
Biovore needs a flatter trajectory and the projectile slightly faster as it's impossible to predict where your spores will end up as he's still inferior to thrope when it comes to long range attack power. If it gets too spammy nerf the damage slightly.
Suggestions for future updates:
You should really implement the Crushing claws damage boot or dps(ie faster refire) in the next patch, as Venom Fex is still a better choice. I'd also suggest a speed boost ability(tie it to reload) that the Venom Fex doesn't get.
If we already have Vanguard Vet, the Special could be renamed as a Tactical Sergent or a Stern-guard veteran when the Plasma gun and Flamer are implemented. He already has one weapon that both types of Space Marine's use.
Pyrovore tier2 tank if your unable to make Tyrant Guards since the lone Lictor is currently the only Tyranid melee class that is on the second tier.
There is a little problem with the Thrope. If you have the healing ability, then you always loose your "heal power" independent whether a teammate is in range or your own health is full. I tried often to heal some teammates, but I got no feedback that Iam out of range, because I loose the power anyway. This shouldnt happen. To fix my mentioned problem would be helpful to know whether I heal something or not.
Agreed. Medic thrope needs better feedback for both the healer and the patient. A new sound for the healing bolt might be the best thing as it shares it with the warpbolt.