The only problem I see would be in games like Alderaan (haven't gotten a chance to play the new one yet, but I understand it's fairly similar). Say none of my team bothers to go left even after I or someone else posts up asking for two left, rest right or center.
It's an objective match, not a K/D ratio match. I go left, even though I'm usually more valuable as a player wherever the fight's going on. I'm not a great player by any means, but all it takes is pinpointing whoever's trying to get the objective and being enough of a PITA to serve as a distraction for the better players to swoop in. Say I get stuck at left though, and they never come to attack.
I'm doing my job, watching for attackers (have 'stealth incoming') already typed into ops chat and ready for an enter. I won't get very many medals if no one attacks, but that spot will be defended adequately. I'll just be very, very bored and usually facepalming at the rest of my team's tactics (don't get a chance to play with premades very often).
I do like the general idea you're going for - but it would nail alot of players stuck in defense. And honestly, there's only been a handful of matches out of the hundreds I've played where the enemy has continually left a node alone. That fixes AFKers right there.
From playing last night on a pve server, our biggest issue is going to be people quitting. We had one guy proclaim that the game was over right at the front because they got two nodes and we had one. The problem, in his case, was that he didn't quit - he just refused to do anything else. It of course didn't help that we were playing Republic and were outmanned 6-8. Then it was 5-8. Then we had a continuous exchange of people coming in and out, but we never got back up to 6. He ended up going afk on left node (without telling anyone) - I left a healer buddy with him and took off to center.Two of us pulled enough of them off center to think center was under threat, and someone ended up taking right. It was too late by that point. Because he'd gone afk, an enemy killed the healer and took left.
We ended the match with only three players. What I didn't understand is why the match didn't end early.