ive played the game a fair bit and can see why they have limited versus to normal.
If your a decent infected team you can completely dominate on anything higher than nomal, even the hordes on advanced do enough damage.
Honestly i prefer the advanced versus simply because its more of a challenge for the survivors which it always should be imo.
Th eproblem with L4D as with any co-op game is that your team is only as good as the 4 players in it, you only need one person running off on theri own or not interested in the team and you will not last.
Ive played a few versus servers where we have 8 OCUK guys on and its been fantastic fun, even when one team seems to be having the edge with regular tank spawns etc its great to see how a team who is getting dominated can still pick them selves up with teamwork and grind their way through a level.
For me th enormal difficulty in versus will just make games longer, not necessarily worse but longer for sure, for me the worst thing about normal is the lack of hordes. If a boomer gets you you should be panicking about the horde coming, not sitting with the melee button to swipe away the half dozen zombies.
yeah just played boomed all 4
