I would agree that, given a sufficiently large number of variables:
- It is inevitable that even long-time Kamailio developers and experienced professionals have to go to the documentation to find what they need. One cannot reasonably expect to have everything memorised without consulting reference material. It's that way with any nontrivial API, library, toolkit or framework.
- All other things being equal, short PV names are much better than long ones.
-- Alex