-The most extreme limb damage: 1 shot to the head or 15 on arms/legs. doesnt help that enemies flail their arms as if they are having seizures. Nothing more dissapointing than using the scorpion launcher on a jobber dinosoid and seeing it survive because the rocket touched the legs, or a cerebral bore hitting the arms.
This also screws tek arrows all over, making enemies somehow able to outrun the arrow's explosion without a scratch.
I also feel that the limb damage takes aways some of the usefulness of weapons. Why use the firestorm cannon on a tough enemy when one well placed pistol bullet to the head does an instant kill? I feel there should be a middle ground to this, or an option to have global body damage like the first game.
-Low ammo: on most weapons, you carry half the amount of ammo you used to in T1, which brings to the next problem.
-No backpack
-Ammo farming: drag down the pace alot of the time on these places where items keep respawning. Wouldnt be such a problem if you could carry more ammo with yourself.
-Delayed enemy deaths: for some reason it takes a second before theystart to play dead. Many time an Endtrail shoots 1 (or two) times as it falls to the ground.
Other than that, some fixes on maps like:
-ne graveyard gate in stage 2 that wont trigger enemies unless you actually touch the gates
-the Soul gates in stage 2 needing some effect to show you are actually damaging it.
-the spinning wooden platforms in lair of the blind ones have a very small area where you can actually stand (much smaller than the model itself) so you have to land near the pole that supports the platform.
Honestly this is more of a case of what they can fix rather than what they can add.
As for what I would want added: a co-op survival mode akin to Mercenaries mode in resident evil, also like that turok mod on Doom roaming out there.