If you'll consider alpacas, you could also consider a non-slaughter fleece flock of sheep.
There has been some interest in no-kill fleece and yarn recently, although I think it's yet to be proven that people genuinely will pay the price for this product. Anyway, there's been enough interest in it for Jane to have created a
'Wool Only Flocks' page in her British Wool Products listings on the Woolsack website.
Breeds that people do seem happy to pay a premium for include Polwarth, Saxon Merino, Scottish Bowmont. Or one of the rare breeds - especially coloured fleeces of breeds that are usually white, seem to be very popular at the moment, and to fetch a premium. A really good Black Wensleydale fleece will fetch £35-£50, for instance. (And that's the regular flock price, not a no-kill flock price.). Other black longwools - Leicester, Lincoln and others - equally fetch a premium.
We recently had a farmer turn up at a wool show with an outstanding coloured Oxford Down fleece. She was swooped upon and offered £20 for it.
You could look at producing yarns and/or fibre. Ellie Stokeld does it all with her no-slaughter flock of rare breed Border Leicesters - and has a real following of very enthusiastic supporters. She works hard at it, though, keeping an active group going in Ravelry, running knits-a-long's with her yarns, going to the shows, and so on.
Anyway, something to consider. And if you liked any of the rare breeds that have nice fleeces, you could do a bit of good, too.
I suppose I ought to mention the Valais Blacknose. Personally I think the market for its fleece will be extremely short-lived - I don't know any spinners who've ordered a second! - but there will be an overpriced market for lambs for monied hobby farmers for some time to come, I would think.