There should also be a huge sign saying “only one person at a time affects any objective, stop piling up”.
While it’s fun to lazor the entire low-level enemy team because they are all stacked up with healing stations behind the EV, I cannot imagine it’s intended.
On that note though, more people around the objective should affect the repair speed if they do not contain an objective specialist, up to the speed of a single specialist. Wouldn’t that solve a lot of the problems and at least give some meaning to eager yet clueless piles of newbies clustering the EV or c4?