Honestly, that is what most DMs have done for the 40+ years I've played D&D.

Flying mounts, winged boots, magic carpets have all been used for a long time. I don't think I've ever known a DM who hasn't done such things once you get to the appropriate "power" level to need it.
The premise has always been casters use magic, non-casters use magic items.
But you have the group
who want non-casters can just do cool stuff "because" they can and the group
who doesn't want non-casters to have to depend on magic items and other groups as well...