It would go against the
TG emphasis on team play. And the aim to get rid of the more extreme 'puby' play.
For example the 'score' is based on points -so you let's say you are at the front and so happen to get top position.
But what happens to the low scoring engineer that blows radar or mines roads, or the Special ops, scouting troop movements for the commander? Both are vital and maybe are the game turners. It would not be fair on these people - who usually go un-noticed in the critical events of a match - and believe me when I say this. I learnt it today when behind lines I saw a guy know exactly how to destroy the enemies' building base abilities and assets, by mining roads, destroying radar and bunkers, harassing the enemy and making them withdraw troops to protect these vital interests - to the point our team won comortably. No big squads, no big names, no big score, no big exit in applause, no big write up after biging friends and names up.
In these cases, scores, to excuse the pun, just don't add up to anything.
Best left as it is. It's very fair this way. Besides, just log back in

Even join your old squad! Better to do that. When you are on a loosing team, if the squads' good and your all having fun, why not log on and join them again. Better than teamswitching (by which I mean those who seem to not like being on the loosing side/guns/friends not about etc etc). I'm sure they would have seen you be ejected, so will understand and be happy to see you back - we've all been there in that eject hotseat.