I'm not too thrilled with our current map vote system. Our servers have practically become 24/7 Payload + Attack/Defend. I can't remember the last time I played PLR on CSn and it's been very long since I last played 5CP, CTF, etc.
A pretty typical night on CSn looks like
pl_upward
cp_gorge
pl_hoodoo
pl_goldrush
cp_mountainlab
pl_upward
pl_badwater
cp_gorge
etc
I know I can nominate and pump my nomination, but the reality is that no one votes votes for koth_badlands, cp_gullywash_final, etc. when the option of playing pl_frontier_final for the second time in two hours is available.
Edit: Threw together a few numbers to make my point. I looked at the last 24 hours of SB1. The server was unpopped for 4.1 hours overnight. There were 18.3 hours of either PL or A+D maps played. The remaining 1.6 hours were KOTH, 5CP, 3CP, CTF, PLR, etc.
The last 6.2 hours (since the server popped this morning) have entirely been either PL or A+D maps.