My bet is that a lot of the next advancements are in convenience. The auto deploy and stow will expand throughout many brands and models. I agree with Joe and the wireless portion as well. The remotes will continue to be upgraded.
As far as output, I’d be shocked if brands don’t start “one-upping” each other in the power/lb force department as boats continue to get bigger. There’s going to be a day in the near future where kicker motors start becoming old technology, and everything can be done from the bowmount including trolling upstream or in steady rollers for hours on end in 20’+ boats. (Yes, the highest end bow mounts can pull cranks and move big boats already, but that will only become more efficient). “Why spend $2500-$3000+ getting a gas kicker rigged up how you’d like, when for a measly $5000, you can have a bow mount that does both jobs more efficiently)