Syncing in Tiger is still de centralised, unfortunately.
iSync is there to sync devices, traditionally the iPod, dotMac and phone.
It is extremely bad design that you have to now go to THREE different places to do what iSync should do... iPod, phone and dotMac. iSync is there to sync devices. This is very unApple like.
And No, iSync isn't getting too bloated, it should do what its suppose to - sync devices - how many devices OSX supports - that doesn't particularly matter. iTunes is getting bloated - there is absolutely no reason for iTunes to sync iCal and address book ( in OSX )... its not what its there for: It is a media player and nothing else, it is over stepping its boundaries by synchronisation of other items...
Synchronisation should be centralised, for ease of use to manage all your devices, unfortunately apple have chosen to make this task long winded and user unfriendly.