And if FRP is removed, the situation won't be resolved. If the problem is blobbing, then the fact is they can blob back to someplace besides HQ sector. People aren't going to not blob just because they need to go back to HQ now. You already have that when HQ truck or Forward Assembly is destroyed.
Yes, actually it sort of will. Players will realize that they're losing map control by losing presence for 1+ minute of the map when they mass retreat.
People can continue to blob, sure. But players who take more strategic positions with mg placement or mines or using cover will be rewarded by gaining extra time to set up defenses or cap more territory.
Basically, it discourages blobbing because those players will lose and unless you want to lose, it would discourage blobs, promote strategy in a "strategy" game that requires different methods instead of a blob. Or, rage quit and move to a new game.