G43 (not X) worth upgrading?

I've been considering an aftermarket slide to give it a bit more keel. I'd use it as a backup to my shield plus for when I want a bit less bulk (so no optic). It's bone stock, except for a couple of mags with +1 and +2 extensions (hyve and tarran) that function well.

The decision is whether I should just sell it and put the $ towards something else, or if I upgrade it to make it more shootable and a better carry gun. What would you do, and why?