Two useful concepts seem to have come up in this thread:
1) a separate subforum with a single thread for each amp model, in order to concentrate discussion, tips, cab pairings, settings, clips, videos, patches, etc. in one location
2) a weekly forum activity called "Amp of the Week," which would be a collaborative, interactive event focused on a specific amp model each week
1) A subforum dedicated to amp models (called something like "The Amp Room" as suggested by GreatGreen) could exist on its own (separate from AotW activities), and would serve as a repository of amp-specific information even if the weekly events lost interest over time.
- The wiki is a fantastic starting point, and these amp model threads could be thought of as the companion discussion forums for the wiki articles. Maybe the first post in each thread could contain a link to the relevant wiki entry.
- Starting with one thread existing for each amp model from the outset would allow discussion on any amp to begin immediately, instead of waiting months or years for it to be featured as AotW. The recently-released owner's manual lists 177 amp models (by my count), and it would take almost three and a half years before all the current amps have been featured.
- (It seems like "best amp for ____ type tones" and amp comparison threads might be best suited for the Axe-Fx II discussion forum. The unique feature of a new, dedicated subforum would be having a single thread for each amp model as a way to eliminate clutter and centralize discussion.)
2) The "Amp of the Week" activity could take place within the already-created "Amp Room" subforum and could add on to the existing thread for the amp model in question.
- The default thread title in the subforum could simply be the name of the amp model: "Brit Brown". While an amp model is the amp of the week, it could be stickied and its title modified to something like: "[Amp of the Week 2014-03-30] Brit Brown"
- The spirit of AotW could be to encourage experimentation with the featured amp, and joining in the AotW activities would likely motivate users to try an amp they wouldn't normally consider, or that they might have tried and dismissed in the past or with previous firmwares, etc.
- The focused discussion of AotW will encourage the submission of tips, clips, etc. and can help to "fill out" the amp threads, especially in the early days of the amp model subforum.