been thinking about this myself. I'm leaning heavily on the 15x's just so I can find more animals. being a more inexperienced hunter, I'd rather see more animals than see how big they are. maybe once I get better at finding them, I'll go the spotter route.
I had a mystery ranch crewcab and I would use the pods to put in the center and that worked great especially for organizing but now i have a kifaru reckoning. its like a giant duffle bag on your back and I just got the pull outs to help with the organizing. can't go wrong with either brand.
I've gone the new limbs route before and if you can't do the work yourself, its almost not worth the money and time. and you're better off just buying a new bow with the right specs that you want