Is there any viability to this? I wanna play BM but I hate how focus starved it is compared to Survival.
the struggle with focusing shot as bm is the fact that you do not deal as much damage by yourself with the arcane shots you are going to get, but if you like playing a spammy spec why not just keep playing SV? I take it you arent in a top 1% guild which is fine but all specs are competitive enough that if you are not enjoying a spec you should play what will make you enjoy it you know?
When I first switched, I felt very focus starved. Once you get out of the habit of spending all your focus like you could in SV, you'll start doing a lot better. I try not to ever dip below about 40 focus, that way you'll always be able to use Kill Command on cooldown, and have very little issue using Barrage when it becomes available. Also, try to only use Arcane Shot when you're close to focus capping.
Worth mentioning as well that BM with Adaptation plays a lot better than Survival with Lone Wolf does, with regards to focus (larger bar, regen from pet, and usually higher haste so more passive regen too). So if you think focus sucks with BM then play Survival with Lone Wolf for a bit before swapping over.
They're just different in how they function. With BM it's just slower getting it back most of the time, even with SF up. With SV you Focusing Shot till you get to max then you can spam a bit down to almost nothing and build it back up quickly, it's several extremes in sequence. With BM you spend most of your time never touching Arcane Shot and keeping your focus up reasonably high for all your important stuff and when BW pops you go nuts with spamming whatever you can fit into that amount of time.