Yeah, IIDX and Pop'n weren't very popular last year since that room was completely dead aside from a few people that stopped by to watch what was going on. I only remember Khoa, his friend, and Xiao going up to play the entire time while I only sat by and watched, rofl. The year before, I remember IIDX being in a lone corner in the DDR room when I was working at AN that year
I'd probably be interested in trying it out, if not watching it again. My friend bought Beatmania from the Dealer's Room so I could probably drop by his house and start playing in PRePaRaTioN for next year if it does happen, lol.