as far as i know,
that's as much as you can expect from rewire at the given moment, basically you just can sync the sequencer of logic triggering reason (or vice versa) and feed the sum-out of reason into two audio channels in logic... so you basically still have to jump around the two.

here is what i do sometimes (mind you i use rewire,very, very, very rarely, not a big fan of reason at all !!)
if i want single sounds or patterns within logic i record them into a seperate track, just solo in reason what you need and record it into an audio track in logic.

but maybee there is a hardcore rewire user around who knows better...

Not sure in Logic, but I do it all the time in PT LE. Once reason is fired up, I can pull up all the reason instruments in the midi output section of the 'channel strip' in PT. I quit using reason's sequencer a while ago for the same reason. Check in your midi options in Reason to make sure it's set to recieve outside midi (can't remember the exact setup, but it's easy since I did it and I'm midi-tarded)

thanks for that. i was thinking as much. you can wire each instrument separately to it own channel(s) in logic alright (by bypassing the mixer in reason and going through the hardware audio output) which is nice.