Mike,

I haven't thought about all the implications,
but the length of set classlib should be finite.

Which pulls me straight in the direction of
"use few classlibs, if you add other/foreign code,
it will get worse".

Also, searching through fewer classlibs "feels"
faster, but such a feeling should be substantiated
with a few measurements.
Have you done a few of those already and my fears are
unsubstantiated <g> ?

rgds

thomas