The only thing is .... you only have 16 midi channels, so only 16 different instruments to work with (actually fifteen: one needs to be percussion)
Isn't there a way to make it more, or perhaps a very small library that I can use in Cubase?
The problem right now is that due to my pc's limits I work in templates and switch over and over.
For example I have a strings, brass and woodwinds template. I work in one template at a time, export the whole as a wav file, import it in the other template and so on. If I could work with a very small library ... or the general midi sounds... I could write my music much faster and just throw the midi files in the templates and finish everything.