Keep in mind that the Gnex forum was really the "Verizon" Galaxy Nexus forum. So if you wanted to get the true vanilla android that is supposed to be associated with a Nexus device, you had to ROM it to get rid of the Verizon bloat, and stay current with Google updates. I think that's what kept the ROM section of that forum so hot. The N4 is so clean right out of the box, and has no carrier interfering with updates, I don't think as many people are messing with it. The only reason I ROM'd mine was because I screwed up the stock OS with some minor changes and couldn't get the OTA to work. It was either flash the original images and wipe my phone again, or flash a 4.2 ROM.