Hi Tanuj,
I know what you mean about Todd AO and the big busy stuff. Most of what I have been doing of late has been small, romantic, etc. and I couldn't ask for a better sound. Having said that I still feel - with some tweaking and balance of ER and tail, eq - that we can get there with it on the big stuff.
Do a search here for SvK's approach to using AV6 (seperating ER and Tail on seperate busses - for flexibility and control). I think it is the way to go.
I took an hour and put together this little diddy - made it busy (and rather lame [:P])- to show how with only sliding down the tail busses a tad and overall Wizoo verb slider much more (everything inlcuding eq being the same) - I get close to a final mix (these are the same exact IR and settings as the piece above). Of course from here careful attention to Eq, etc. will be key. I have purpose 'layered in' more on each sussequent phrase to hear the build up of notes has on the overall mix.
Again look for Savkampen's post on setting up AV - Good luck. This business of mixing is for sure a lifetime pursuit. I have really appreciated the kind folks on this board that have been so open to sharing their knowledge and experience.
http://www.robelliottmusic.com/mp3s/Misc/Skitzoid%20strut.mp3