There are several ways you may use to build side quests for a high level party.
1/ Recurrent NPC : (usually the well I'm gifted to put me into trouble type). Even if you haven't planned anything, perhaps have you some specimens whom quests can be enhanced in the late game?
2/ Social skills rewarding quest : for instance in one of 16 Cygni 3's last town, a theater stage manager is looking for artists.
3/ Sidequests related to your main quest : for instance an enigma to find a key NPC (instead of having him just waiting for you) or location.
4/ A companion is kidnapped by baddies ...
5/ Recurrent secondary theme : for instance in 16 Cygni, I implemented a kind of large multi national trust versus "free trade" conflict. An opportunity to set up many side quests : to which side will you sell a mine you have found, investigate on exclusive selling rights, help "modernists" or "traditionalists", ...
6/ Use a fedex or a "rats" quest but make it fun. For instance in 16 Cygni 3 your bring a "special" gift from a temple priestess to another temple priestess. Can't tell more

... Put a dressed up rat quest in my incoming mod, but of course can't tell more ...
Hope it helps.
Modifié par Claudius33, 21 octobre 2012 - 02:05 .