What LP? Pretty sure Lara isn't a lesbian
As for multiplayer:
The multiplayer is hilarious. I can't take it seriously. The running animations for characters are hilarious and you can just jump across the whole battlefield to the point where you're avoiding enemy attacks and flying at some points.
It sucks though. I did really good at it (even got 10 kills in once match without dying) but it got boring quick and only the comical value kept me playing, which died after a few matches, so I have never played it again. Can't really criticize them for adding it though. It wasn't them who developed it so they never wasted time or resources.
I am surprised it turn out as horrible as it was though what with it being given to a separate team (Edios Montreal). You'd have thought they were given enough time to produce something decent. I guess the fact it exists is enough to make anyone hate it considering it's not any good.
If they add multiplayer in the next installment then they should make sure it's good or not add it at all just for the sake of it (which this most certainly was).
Best Tomb Raider ever IMO though. The story, exploration and gameplay were all fine and fun and the game lasted just long enough. I agree that tombs could have been longer but I don't think MP had anything to do with their length (considering it was a separate team working on MP). I think they had less emphasis because of the story. For me it sometime seemed at bit unrealistic for Lara (a woman fighting for survival and trying to save her friend) to drop everything just to explore some tomb for riches and gold. However if they added them as part of the story that could have overcome that problem, as it were there only two-three tombs in the main plot IIRC....
Another thing was that there was too much combat. By the end it's pretty much established Lara is a badass. Good. Now the next installment can focus on more exploration (and make it proper open world this time).