I'm advocating XP for PvP in the same way it's implemented in hundreds of other games (rather successfully I might add).
Kills get you minimal amounts of XP with diminishing returns per match.
Winning/Losing gets you a more substantial amount of XP at the end of the match, winning being, of course, the best rewarded scenario.
If you SLAUGHTER the enemy team (by any means), you'll run into those diminishing returns quickly and be unable to get more kill XP/VP/Whatever for them.. and both you and the losing side will eventually finish the BS and get your appropriate reward.
This is a tried and tested formula. It actually works and has literally millions of people pvp'ing for over a decade's worth of data for you to see it working!
If you're stupid enough to face 4-5 characters alone, you deserve dying in pvp. Dying quickly and stupidly, no excuses there! I sometimes head into PvP BS by myself, but I always make sure to stick with my chosen faction's members rather than go headless chicken mode and chain-die. I also avoid chasing a nice tasty green target only to be lured into a big team formation that was using him as bait.
You know, basic solo pvp strategy.
Often I also head into PvP with some friends. Sometimes it includes and engi or trader, often it includes a crat too. I don't get why you'd want to exclusively queue for solo PvP other than to stroke your epeen.. but hey.. whatever makes you feel good!
Don't try to make this exclusively about multiboxing either. Most PvP matches I have done over the last year have had no multiboxers in them. You're trying to strawman this argument into oblivion and it's not working well for you so far. This is about PvP and team PvP. Not another of your "i hate multiboxing please take it away even if FC and all the other major companies say it's fine" pointless arguments.