Honestly it's pointless to have it in the bucket list. The only people that play it are the people that actually like it, which is almost nobody, and the people that like to boost off of it for an easy and, somewhat, quick promotion. I know of like three people, plus myself that's tried it once so I'm being honest, and a few randoms that have done this because SO FEW people play it to where it's ALWAYS or mostly "Low Population." Note that I've only done this once.
I've been supporting 3 v 3 Deathmatch for a really long time and I've done tests to see how much it lags which is very little. Some people say that the games would be to quick... well what about 1 v 1s that mostly involve PoR Wraith rushes? And sometimes 2 v 2s can be quick and short or really long depending on the leaders used and the map and the players.
Personally I don't get why some people say that 3 v 3 Deathmatch would lag with 95 pop MAX on a normal basis for both teams when Standard can have 120 Hogs on one team... which is or was a nightmare depending of things.
I have no clue about Tug of War but I think it's safe to say that it's not doing that much better as well. I know, but like to think it would happen, that having a 3 v 3 Deathmatch for MM will never happen because some people *cough cough* Aloysius *cough cough* say that the game play, more or less, sucked and there would be no point on putting it in.
I've played a few matches of 3 v 3 Deathmatch with friends and with AI, I know AI don't really count, and I've only seen one small lag spike when the BC charged a UNSC base with units of his own and with the UNSC army and use his vortex. It spiked at the very start of the battle that only lasted about a second and then the game went on as normal.
Wow... this turned into me asking for 3 v 3 Deathmatch...
Back on topic, 1 v 1 Keep Away really shouldn't be put on the bucket list mainly because it only just fills up space and allows cheap people to gain an easy General Achievement. Note the Achievement is not what I'm worried about but just the fact that it's just there.
I'm a beast in Deathmatch.
Not so beast in Standard but can still kinda hold my own.
Currently looking for decent partners in 2's and 3's whether it be Deathmatch or Standard.