You're probably right that at least one of the current leagues will continue to exist (like ECAC out east), and you're probably more right than I'd like for the leagues. But...
ouch. SCSU and UAF being the headliners of the WCHA, with NMU and MTU as the also-rans, BSU and MSU in off-years, and UAA and LSSU along for the ride? You're still working with the two Alaskas in the same league too, and something tells me that one or the other will skip to the BHHC in a few years. LSSU isn't staying for long either
Your CCHA just hurts, though it's probably pretty accurate too. Regarding RIT, toss them in favor of Canisius and Mercyhurst, since RIT is scholarship-limited as D-3 while the other two wanted full-scholly leagues. I think the only way the CCHA will survive the next decade is by being the new CHA, but it hurts to see.
Meanwhile, the BHHC won't do as well as it hopes - Denver, NoDak, Notre Dame, Duluth and Miami will get tired of beating each other up for NCAA berths, and no one will draw as well as they used to. Fast forward five years and the western BH schools split back to a relatively healthy WCHA, the eastern ones pick up the CCHAers, and with a few slight alterations and at least three teams missing, we're back to the post-Big Twenve hockey landscape. May as well save the trouble and skip redrawing the leagues now.