The great thing about collage is that everyone sticks together.
I can't really justify it, but what I want is pretty close, in the form of 1080p LED short-throw projectors; right now Philips and LG both have models out, though reviews favor the LG by a long shot.
LED: long projector life, and brightness figures that are getting better with each year's new models.
Short-throw: less clutter in my living room or wherever; I've got a projector (720p) from LG which I rather like, but the throw it requires makes set-up rather annoying. I suppose I could bother with a perma-install, sure, but I like being able to move it around.
Projector: vs. conventional TV -- easy to move within the house, or bring it while traveling, or secure / hide against theft
I'd also like to be able to get two of them, turn them on their sides, and make an even bigger picture; I've seen multi-projector set-ups that worked surprisingly well, but the set-up was finicky, and pretty much requires a dedicated viewing room. If this was a simple endeavor (to the user!), something like making a panorama shot on a modern phone, it would be great -- just put up all the projectors available, and let some algorithms work out how to use them all to make a high-as-practical total output
Make all of the old accounts inactive. Make everyone reregister (or not, as they prefer) under their real names for new accounts. If someone can show that they were previously posting under their own name, reactivate that account by hand. That will probably be a full time job for someone for a few weeks.
I would not be too surprised if they got sued under their plan. One lawsuit, even if they win, would cost a lot more than the costs of doing this right.
Numeric stability is probably not all that important when you're guessing.