#1: Alright, given the Crisis model that's fair enough. I still think it's a bit silly though that you can manipulate the roller bed on a halfway, limited basis. To differentiate Crisis borgs I think it'd probably be better to give them a mobile one man stasis pod/sleeper not unlike those on the Oddy mechs rather than crippling the Medical borg's roller manipulation (also perhaps a speed buff; I haven't played one on Aurora yet, but by default they're just as slow as a standard borg incredibly), thereby cementing it as the better choice for rapid response.
#2: Cloning is a pretty vital function of Medbay. Honestly I don't see how it's less vital than say surgery which Medborgs can do completely autonomously, but which can be bypassed in most cases via peridaxon and bicaridine. If there was to be a module devoted exclusively to cloning, wouldn't that be overspecialized? Also, denying Mediborgs the ability to do this can have horrible repercussions for people who must sit out the round for an indefinite period because of this arbitrary limitation, such as in the case of that Vampire round I mentioned earlier; had about 6 corpses by the cloner and couldn't do anything about them; 6 people out of the round for more than an hour that could be in the game and roleplaying.
#4: It is a similar case to #1 since a borg can actually achieve the desired end outcome, just in a very roundabout way by transferring blood using its integrated syringe; in otherwords, it just feels like a needless obstacle. It might also be possible to input a beaker into the IV using the chem gripper; will check next time I'm on.