I'm going to add my two cents to the discussion... and boost my post count to twenty while doing so.
While I do agree with Saturn1217's opinion that
In many other fields (I work in biology) it is very common to have a review article to get people up to speed on a specific topic without them having to read every primary piece of evidence on a topic because that is a lot of needless repetitive work that has already been done. It isn't being lazy. It is being efficient.
I have to side with Nephilim. Unlike performing research in the sciences -- and I know what it's like to read thirty or forty articles dating back to the 1970s to present to get background information -- the information for the ROMs is easily available. A compilation thread doesn't make sense because ROMs change daily, and updating those changes in a compilation thread would be a full-time job in and of itself.
The best course of action is, as Nephilim said several times, to go to the various ROMs and read through their threads. Find out the problems that people are reporting; read the change logs (if you're so inclined); and, ask questions in the threads of the ROMs that interest you, or that seem to have the popularity/following of the community.
Threads that ask for the best ROM to do X become a burden to the forum moderators. Instead of providing objective evidence of why ROM 1 is better than ROM 2, it becomes a thread full of subjective valuations on which ROM is better and why ROM2 is the greatest piece of programming EVER; and ROM 1 sucks and should be erased from the internet.
I spent nearly a week researching ROMs, tools, etc. before I unlocked and rooted my Galaxy Nexus. The information is readily available and doesn't require quite the level of intense research of something like, say, biology or physics. Recently, I have been researching various 4.4 ROMs to flash to my Galaxy Nexus... although, I have also been contemplating "downgrading" to 4.2 for the sake of some issues I have had with my phone. Regardless, the best place to find this information is in the threads for the ROMs themselves instead of asking in the General Topics forum.
Phone: Verizon HTC One M8: stock, unrooted... for the moment.
Verizon Samsung Galaxy Nexus: rooted, unlocked, but running Stock 4.2.2 Jelly Bean and Stock Kernel
Tablet: (WiFi-only version) Samsung Galaxy Note 10.1 (1st edition - Stock, Unrooted)