The Eb clarinet is a different beast. Personally I do not care too much for it´s sound, although i has it´s uses. I have never asked for it when I have written for orchestra. But a 2nd clarinet, in A or Bb, that sits nicely with the one we already have, would make the library even better. For unison lines, (again, for me that is not overly important,) but harmonies and independent solo lines would sound more realistic with two different instruments. And VSL is all about realism. They say so, anyway.
A somewhat smaller sample collection, like bassoon 2, would be sufficient.
Gaute