I've been asking this question for a while, since I'm recommending installing the OTA firmware in my XDA rooting and S-OFF thread, and so far the only negative I've heard was from one user that said his phone was overheating with it installed but I don't see how that could be related to the firmware.
There's no doubt that the original "fix everything" thread had it's purpose when the original firmware was the only official VM release, but now that baseband version 1.09.00.0706 is available and contains the same radio and firmware as the Evo 3D ICS version, it doesn't make sense to back level the radio and PRI to Sprint GB versions that are out-of-date unless you are having problems with the official version. The PRL is a matter of opinion, but I always use the current version from the update function in system settings and have never had any problems with that.
For anyone who is S-OFF and on back-level firmware, krowley3 has a post near the beginning of prinny's OTA update thread with just the firmware updates, and joe_blow has a new "fix everything" thread that installs a custom bootloader and recovery along with all the current VM firmware.
ramjet73