Hey KVR, I've scoured the internet for an answer to this question but here I am:
I'd like to create a (macro?) within Logic to assign multiple automation parameters from multiple plug-ins (all within the same channel strip), so that when I automate this macro all the automation parameters I have assigned correspond in time. Thats it, that's all. To be slightly more specific, I'd like to automate a few parameters in FM8, or Diva or whatever the instrument, and when this happens I'd like a few other plug-in automation parameters to correspond. This will save me from trying to do this individually, which is a giant waste of time when I'm looking for all these parameters to move in sync.

This is extremely easy to do in Ableton, however I'm not much of an Ableton guy except for a few features, like this one...

If you can help I'd greatly appreciate it thanks guys and gals.

what kind of parameters would you like to automate at once, and why?

I answered a similar question over at Five12.net on 2/27/2012
http://five12.net/showthread.php?t=1759#7

This person wanted to control knobs on NI Massive but using Numerology 3.
It's pretty much what you want to do but he wanted to use Numerology 3.
You should take a look at Numerology 3, it's pretty awesome.

I also posted this video to show how you can control Alchemy as well.
http://five12.net/showthread.php?t=1759&page=2#11

But, I also created a new video on how to create what you want without Numerology 3 and using Logic to control knobs on FM8.
Check it out.
http://www.youtube.com/watch?v=8k6zmWKLE5M

Any questions, let me know.