OK, I think you are missing the point on some of this.
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VE has 16 stereo outputs per instance, so why are you only using one?
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VE gives you an extra 3GB or so, separate from either Logic's RAM or VI's RAM, which is routed into Logic without needing 3rd party audio loopbacks.
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You have probably got velocity xFade on if everything plays back at one velocity level. I'm not a Logic user, so I can't be sure what you've done, but this is certainly user error. Nothing wrong with VE on this.
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One of the best reasons for you to use VE is that you can pan instruments properly; something which I'm told that Logic does quite badly, even with the Direction Mixer (?) plug.
I don't want to be callous, but you need to look further into how to use the software before you dismiss it.
DG