While I stand by my statement that "As long as mimic is a thing, Bards will likely never catch Chanters," I agree with Randalph that turning RO into a group record isn't quite the answer for bards. RO/VC is the bards' class defining skill and historically has been the bard measuring stick for how "well played" one is. Turning RO into a group record wouldn't be in the best interest for bards as it would take away from that defining skill as well as create more problems than it'd solve. (Disparity between bards due to group make ups, pet damage probably wouldn't count so rip a vc that's recorded from summoners, etc)
There's really two things that need to happen to Fix VC:
1. Bard abilities need a significant increase in damage (both Spells and CA's need to get looked at)
Note: I understand this point requires its own series of posts with details on individual spells, but stating it vaguely here is relevant as there's no "fix" to the RO/VC problem without bards getting an increase in damage output
-Increasing ability damage would result in higher VCs and would have bards go back to having "VC chains" as we did in the past which would make playing bards more fun
2. The trigger limit needs to either be removed, or at the very least significantly increased.
-On a 7.5min fight, both necros in my group procced VC 21 times. Which is an average of only 3 times per cast of VC. With VC lasting 12s, that means they only triggered VC to hit once every 4 seconds resulting in the damage of VC to be negligent as part of their damage output.
Note: Milage varies from fight to fight, this data was taken from just a straight turn and burn with no movement included
-In order for VC to be a relevant group damage proc again, it should be hitting every second, as a dot, or triggered off any damage cast from the group
Sidenote: I'm unsure of the multipliers and whatnot that actually go into the RO/VC formula, so if damage has to be lowered slightly to account for higher trigger counts or even if bards get an increase in damage that's a discussion we can have as well
In summary, RO/VC definitely needs some help to become its class defining ability once again, however, making it work like mimic doesn't seem like the best course of action. The best course at least in my opinion, would be to take a look at increasing bard ability damage (something that requires a series of detailed posts), and raising or eliminating the trigger limit of VC.