I find it really fun, except when there's a Booster who comes in with 4 controllers loaded up and just kills his afk extra slots over and over again for a free K/D ratio. It's kind of stupid to play 1v1 because the other guy is farming his own "guests" over and over.
I just hate having the damn target over your head and having every other player gunning for you <_<. Some maps its still pretty easy to do well even if your marked, on others its just damn near impossible.
Half the time I just try to wait till the scores hit the 250's then try to go for one quick killing spree. Way too easy to be the King with 290 points only to lose by someone catching a max bonus off of you.