Now that VSL has learnt something about sampling keyboard instruments, isn't it time for the fortepiano? Possibly, a Stein as the one used by Mozart, Haydn and the young Beethoven?
The other instruments suggested by Mark wouldn't disturb, either. There is no competition, so they will be the forced choice for anyone wanting these instruments. And they will be great, unheard basis for creative presets to be used in the most sophisticate songs.
Maybe I've already told this: I'm hoping it will be a replica, and not an out-of-tune, rusty authentic one. Replica instruments are not copies. They are the real instrument, but new as when the greats were playing it.
Paolo