I've dialed back on missions, since basically every follower is epic quality/630+, 2/3 of them are 645, and I've got every possible raid covered at 100%.
I'm still harvesting since it's basically my main Savage Blood ressource thru Primal Spirits; I've entirely given up on trying to get an elite trapped. It takes me less time to run the mine with all my alts than get 6 beasts to feed to the barn, for a bit over a blood a day. I'll probably stop once I've geared my main alt with fully upgraded weapon+head+legs (in about 3 months), and won't bother for the others.
Garrisons are like raids. They're good while you're progressing, but once it's "on farm", it's a bit boring. But for the alts, it's going to be a bit better since I've got the "all dorfs", "all spacegoats" or "all orcs" objectives to fill.
(I had to teach a couple guildmates about the trick of getting a bodyguard+follower to help for invasions. Not everyone had realized that you can grab any follower to help you before the invasion is started by simply speaking to them. Not that it's really necessary, but it's good to get 1000pt before mop-up)