This request is quite tricky I think. Allowing write access to ~/.local/share/applications allows a trivial sandbox escape for this snap since it can just drop a new desktop file there that overrides the one installed by snapd which launches itself (or some other application) outside of the regular confinement provided by snapd.
On the other hand, I don’t see this snap fitting on any of the existent categories for classic either.
@alexmurray @pedronis any suggestion?