Steffen, thank you very much for your answer. I had missed your old message, more or less containing my same kind of questions.
To try to make a manageable universal map, I tried to do this:
a) create a meta-table of articulations, to later fill with actual instances from each library;
b) split it between basic articulations, and more advanced, free-floating ones.
For example, I will post in the following message my universal map. This is the articulation map, that will then be extended with the actual commands selecting the corresponding patches. I will have a template for high-pitched VSL instruments, one for low-pitched VSL instruments, one for each of the Xsample Extended instruments, one for NI Symphony Essential Brass Horns, one for any other library or instrument I will use.
Two templates are needed for high-pitched and low-pitched VSL instruments, because the default keyswitches may overlap the lowest notes of very low instruments, like contrabass tuba or clarinet, or the contrabass.
I'm trying to make my map as short as possibile. As you notice in your other message, a complete map could be too long. A shorter one could work, if you leave some articulations "open", to be only used when you need it. This way, you get a fixed set of basic articulations, and some slots open for extended techniques.
Paolo