I think the people here should be more cautious when asking for bigger servers. While it may sound fun, you have to consider how this would play out. For one thing, the objectives are designed for a limited number of players. Imagine trying to take the objective with 48 players on the server. It would just be a mess- players all clustered, lots of grenade spam, and you would never be able to actually take the objective because there will always be one or two guys left. It would also be harder to move out in the open due to there being more snipers. While the previous Insurgency was very fun, the maps were pretty crammed. Having some more breathing room in this is pretty nice, and it would be a shame if NWI were to counteract that by increasing the number of players.
With that said I suppose you could have more players if you were to develope a new game mode with more objectives. More players in the game’s current state would be a mess, but it would be nice to see something that utilizes more of the maps. I do find it to be a bit disappointing that you only ever really get to play on a portion of the map.