spinynorman,
I've looked at Kivio and it has imported Dia's templates. Apparently, however, it does not support rotation too.
arctic,
I've looked at OOo Draw before posting here and find its connectors excellent. Unfortunately, as DragonMage pointed out, it doesn't have templates. Fortunately, there's a logic template (actually only an sxd) in ooextras so I used it in this case. However, I'll encounter this same problem again in the future when I use circuits.
siege,
I use InkScape actually for general purpose vector graphics
I might create templates (at least for the ones I use) for OOo Draw and post it in ooextras in the future when I have the time and motivation