--metadata MMR static for unranked games, and missing for teams

Figured I would lump the two things I have noticed into one ticket. If you would prefer I can break them apart.

But I have implemented the metadata processing into my version of s2protocol and have been processing replays for about a week now with it. Looking at someones account that I know are unranked replays, his mmr is always 4190, win or lose. This might be expected, but I actually expected the mmr value to still change for an unranked game (just not displayed on the UI).

Example unranked replays.
http://sc2replaystats.com/download/4483632
http://sc2replaystats.com/download/4483619

For teams, it seems like 99% of the time an mmr value is not returned. Have been unable to see the pattern for why they return. But here is an example of a replay where i'm ranked as random teams (m3 I believe, dont know my mmr off hand)

http://sc2replaystats.com/download/4445995

In this example claptrap has an mmr value but breath and other do not (claptrap and breath queued together)