Completely agree. But low budget? Why? If they're going to do it, do it right and invest a nice sum into it (like was done with the pilot, though it doesn't need to be as expensive since an actual plane fuselage wouldn't need to be bought) so it looks good. I'm not talking a huge budget, but a decent sized one.
And a TNG approach would be perfect, with Hurley and Ben taking on their new roles, and ideally Walt coming back as a main character.
If not a television mini, maybe a comic mini or graphic novel. Lost is the perfect show format for a comic or GN adaptation, after all, and it'd be easier to pull off.
Still, a TV mini would definitely work, and most likely attract the desired viewership, especially if they waited a few years before doing it.