Here is an idea which you could take into account.
http://www.beat-kaufmann.com/vitutorials/vibasicpresets/index.php
I've seen over the years, that it is quite a good thing to own basic presets for each instrument with always the same organisation.
(Same Keyswitches for selecting the same articulations and this for every instrument)
So you will be able to exchange instruments at any time without the necessity of changing the keyswitches (or controllers) as well.
Further, if you have such basic settings for every instrument you dont need to load the whole possible orchestra every time.
You can build the desired orchestra (instruments) in a very short time as well.
Another possibility is, to use the Vienna Ensemble.
You have the possibility to use several VEs as modules so to say.
Such a module could be "The Chamber Strings" or "The Appassionatas" or "The Solo Woodwinds"... All of those modulesare
internal panned, EQed and mixed for it self. You just have to route it through the desiered depth of you mix.
So you will be able to build up your Orchestra in a very short time:
Take the Module "Chamberstrings" (routed through depth 1)
Take the Module Brass Soloinstruments, routed through depth 2
Take the Module Percussion, routed through depth 3
Voilà thats it - You have the Mix as well
If you used the upper VI-tip inside the VE you know that Keyswitch C0 is always staccato for every instrument - for example.
These are some possibilities. There are a lot more of course
Collect here all tipps. Finally try to find the best solution for you.
But once more: It isn't useful always to load all the instruments and their articulations .
1. You spend a lot of time with waiting (Loading samples)
2. You are not very flexible because all the routings are done for one certain situation.
Best
Beat Kaufmann