So if you stop paying vault license fees you are stuck with whatever was the latest version of the vault at the time your license expired.
I thought you actually lost access to the vault full stop!
I started out with SmARTwork in 1988 the moved across to Protel in 1990 (in the days when Nick Martin told me in Adelaide that "the software is so good we don't need to supply a demo version for people to try"). I upgraded a number of times until several years ago when I decided to bite the bullet & move over to DipTrace (& Proteus as a contract engineer).
I just got so sick of all this so called Altium "integrated" stuff that caused me so many headaches.
Yes, Altium is very powerful & yes, with Altium you can do almost anything you want when designing a PCB.
But, I can move from the schematic to the PCB in DipTrace smoothly without any "hassles" which makes DipTrace a more productive package for me.
A group of us have been working with DipTrace to implement lots of shortcut keys in a similar fashion to Altium.
We have also been working hard on the libraries, which got implemented in Ver 3.0
Instead of going down the path of providing the multitude of manufacturers parts (ie via part number from On Semi, Microchip etc), we have gone down the path of simply searching for the generic footprint name (ie TO220, SOT23, SOIC8 etc). If there is an odd ball footprint, just choose a standard part that is close, make the modifications to it in 2 minutes flat, then save it.
Yes, I still use Altium when upgrading legacy boards, but I often cringe when something that should be simple turns out not to be.
In the Protel days most of the menus where logical & self explanatory. Unfortunately with Altium, this is often no longer the case.