I have a store and a service center both within 30 minutes so I'm lucky. I honestly don't know what I'd do in your situation. I'm sure the BL20s will be a nice upgrade from the BL8000s, and speakers still seem to be a strong B&O core competency. On the other hand, they're heavy and expensive to ship if something goes wrong. Also, they don't sound great if you are standing up because the ALT limits the vertical dispersion of the sound - so if you're looking for "party speakers", maybe there are better (this is one of the reasons I went with 2nd hand BL1s vs. BL9s).
To hop on this gloom and doom train, even with sales and service resources close by, I'm starting to question my allegiance. I have a house full of B&O, but everything connected to ML got zapped by lightening. For a few moments, I was considering not fixing it and moving to sonos. B&O is pricing itself out of my reach. For example, I want to add a speaker by my pool - to go the B&O route, I'm looking at an Essence + 2nd hand Passive + special cables + maybe an Apple Airport Express (my other Essence was somewhat flaky until I hardwired it to an Airport - and my wife doesn't deal well with "somewhat flaky") vs. sonos amp (less than 1/2 the cost, one device vs. 2 or 3). While the sonos may not sound as good, its software probably works better, and do I really need great sound by the pool? No, I don't. Also, I'd like a bigger TV (currently have a BV8-40), but don't have $10K to spend and the hoops one has to jump through to get a non-B&O TV integrated into B&O multi-room is troubling. OK, maybe I'll spend $7K on a Horizon... but questions of B&O's long term support for Android and the bugs have scared me away.
Then again, I thoroughly enjoy most of my B&O. For me, it was the BeoLink Wireless1 that started my doubting. Whenever I look at the alternatives available on the market ), I end up back with the brand. I'd probably buy the BL20s if I was in your situation because what is the alternative... ugly black boxes? Then again, I can understand not going that route as well... If the Bay Area can't support a B&O store, I do worry about the future of the brand.