Comedy trailers are never funny so I'm not sure you can judge its quality based on this. Like a lot of comedy is situational within an episode and based on minutes worth of build up for a big payoff. But obviously you can't show any of that in a conventional trailer so it will just be the one-liners which are always the worst bit of a comedy show and basically added to the script as trailer filler.
Having said all that, I'm not a fan of The Office or regional reboots so I'll definitely pass.
It has way more than "a few thousand active players". The 24 hour peak is over 92,000. Deadlock is a big game at the moment, even if it's in alpha testing.