We're working on it.
If the plan works, 200+ will be ok :D But don't expect too much right now.
In fact, you shouldn't even count on it. It may happen, but chances are low. One must be realistic.
That doesn't mean we're not gonna make our best to make it happen, but you shouldn't count on it.
As for the current venue, it can hold 150 people, but as porc said, in a standing/dancing setting. That is to say you don't have any TV, table or chair in the way like we do during tournaments.
And I personally think having too much people crowded in a place too small isn't doing any good for the tournament. I wasn't there, but I believe many didn't like that much their nights during RoX4.
TSL1,2 and 3 took place in a 100-people venue, and we could hardly have been more than 50. So this time, it would be hard to allow more than 96 people.
(For those who may be wondering, it wouldn't be a problem to have a few more people, but 96 helps a lot in order to do a bracket).