Yes. While routine
scheduled maintenance is hardly different between N and G, the
modification approval regime is much better under N.
The FAA regs still leave plenty of scope for a creative interpretation, but at least they are mostly written down, making it easier to separate a major mod (which needs a 337, DER, etc) from a minor mod (which can be field installed so long as certain requirements are met).
Also never forget what a lot of people do forget: if the gadget you are fitting is on the aircraft type certificate (for the applicable airframe S/N range) then it can go straight in - no approval is required. The TC is what enables the aircraft manufacturer to build the planes in the first place
The mfg doesn't have to apply to EASA or FAA for approval for the GNS530 they screw in on the production line...