IO540, with nearly ten thousand comments, are you serious about thinking a long straight in is a good idea?
Please don't come anywhere near my airfield! We do train our pilots to have a good lookout for people doing what you suggest, but o dear. It is certainly not approved by our CFI. Why not join the downwind on the diagonal, where you may be able to slot in nicely between the spam cans, microlites, gliders, motor gliders and non-radio stuff.
As for airfields with ATC, if they want to permit a straight in, that's another matter entirely.