I don't start osu! that much (I keep it on), so I think a notification would work better. It'd be checked transparently and I'd be notified on the song selection screen.
Alex0686 wrote:I would prefer that when starting osu! it checks them all for updates, and you can chose to update all, or only ranked/approved(when downloading ranked beatmap packs, sometimes it still need to be updated), only pending/help/graveyard, a list to pick which to excluded(only displayed if you want to exclude certain ones?), and an option to exclude all your own.
Sounds kinda osu!-direct-y.