Another suggestion is to make the bots operate as a squad and not doing lone wolf. There was a bot mod in the BF2 days that accomplished this, I can't remember the mod.
Another suggestion, is if it's possible for the bots to have various skills, one bot is what we currently have, stupid but sharp shooters and another skill is more human like behavior, like the bots using cover to their advantage (not running around) and yet still aggressive. This somehow simulate deployment but with more fun. The problem in deployment servers is the waiting, humans tend to stay and hide, their leaders do not initiate a full force attack or counter-attack, human players in deployment though tactical, tend to be more on protecting themselves rather than a full scale/all out approach towards the enemy. Deployment simulates real life modern combat however is not fast pace and not as fun as in coop.
If we can have the above bot behaviors, it will be more interesting right? If you've played before the half life counter strike coop, their bots have the behaviors that I suggested.