I've never played any of those, and if they use that sort of design I doubt I would enjoy them.
Otherwise, if a PC misses, they miss. Either get over it or get better at hitting.
I don't buy into the whole "don't feel like they're contributing / having an impact" concept. I am also not a fan of "auto-anything" without a cost.
If the Graze feature used a reaction or something, I could get behind it:
"The attack swings just wide and fails to connect, but with a well-timed flick of your wrist you manage to graze it!"
People would be up in arms if an attack cantrip had a rider: if you miss, you still deal your spellcasting modifier damage. Off-hand, I don't know of any feature that allows this... but WoTC has a whole slew of books I have never seen so maybe it does exist?
See, and to me the fact that for whatever reason you think a house rule might be needed for it, indicates an issue--even if just a minor one.