You're right about the musical adjustments that players make because they are playing in an ensemble - it is a basic part of the ensemble sound and lost when you stick separate solo recordings together. But the "bleed-through" is not a flaw but an essential part of the players fitting together as an ensemble.
For example - suppose (a somewhat weird situation) that the players were recorded as true soloists in totally isolated recording chambers but playing together with headphones. They would sound like separate solo players, and not blend into the true ensemble sound that the Dimension players have.