Depends on who you talk to. I do an annual Purevax rabies on Assumpta and nothing else. I do the rabies because it's required by law, and because she's a confirmed biter and I'd just as soon have her up to date in case anything happens. We don't do FVRCP anymore because of her kidneys and immune issues
I believe in a full set of starter vaccinations, even for indoor cats. After that, I'd probably follow the protocol of no FeLV (for an indoor cat), an FVRCP every three years (maybe, depending on the cat), and an annual recombinant rabies vaccine.
(and "boosters" are vaccines...it's probably just a call in for booster shots. IMO, most of the annual boosters aren't necessary after the initial complete series...maybe keep a current rabies, to stay legal, but most vets I know are going every 3 years on FVRCP and not doing FeLV at all on indoor cats)