I'm in the same boat waiting for them to release a 3" LCRx in .327 Federal. (The versatility of such a gun would be fantastic, in a kit or wherever.) I'm guessing these would happen together if they do since it's only a matter of adapting the heavier-framed magnum LCRx to the longer barreled design. I've watched the LCR grow from its original inception and if the trend holds, this dream could become a reality.
In the meantime, the only reason I haven't jumped on the 3" .22 WMR version is that I haven't seen one IRL. It might have a heavier trigger than the centerfire LCR models but compared to other rimfire guns in this size or weight class, it still sounds like a winner. It'd be a handy kit gun and it's probably a lot of fun. It's not as versatile as the fantasy six-shooter I'm waiting for, and it certainly can't approach the power levels of either of our awaited dream guns, but it actually exists. Now it just has to exist at a local shop or gun show where I can get my mitts on it.