Exactly. They need Social Playlist Equivalent for each Rank/Competitive playlist they have. Sometimes I like just going out with a simple game but other times I want to dual wield Plasma to be silly and actually not die every 2 seconds from precision shots.
Everything is social at this point.
However majority of Halo 2 maps don't support non BR starts. If anything Slayer with MSG starts was terrible for the sole reason that it turned BR's into power weapons on most maps. It was never fun playing SMG starts on maps that have proper set ups. Halo 2 1.0 was utter garbage without a BR due to the melee damage back then. Anyways, I get the point of wanting to have more "fun" with duel wielding combo's but what's fun for you guys isn't fun for everyone.
Lastly, who the -Yoink- wants to play SMG on Zanzibar. No one. Ever.