On LAX-- getting rid of the 10 crj200s that were doing AA flying theoretically put the base overstaffed by 50 crews. Management announced the reduction last April or May and it started last month and I think concludes by December. They can use those crews for UA or DL flying that would have been done by other domiciles so it's not like they have a bunch of pilots sitting around. They haven't transferred any pilots into LAX since that announcement six months ago.
Rumor has it that up to 10 of the 175s that were recently announced may wind up in LAX. Those don't start showing up until the middle of next year I think, but I'd presume they'd announce the base and start transition training in the spring if that were the case.
On SLC -- not too hard for an FO to get. Forget about it as a CA. We've shrunk from a high of 410 captains down to 289 over the last 3 years or so. In that time they've only let less than a dozen or so into the domicile with the junior one having 13 years seniority.