It would be interesting to get involved, but alas I wrote my last Pascal program in 1988 (although with a brief excursion into Ada, which has a similar syntax, in the mid-90s). Since then it's been mostly C and then C++. I might be a bit rusty now!
Hopefully, Martin, your 'use by' date is still many years away!
However, this thread has put one question in my mind. The current Templot always appears to insist on phoning home to find out if there's a latest version, and won't run until it's done so (at least when I last used it, which was about a month ago) - if something untoward were to happen to you (heaven forbid!) have you put into place any provision for "home's" continuation so the full Templot doesn't expire with you?
The UK server connection is currently secure until 2022. This doesn't require any further payments. The alternative USA server connection is secure until 2026, but would require someone to keep paying the hosting bills. If I'm still standing when they come up for renewal I will extend both by another 10 years (the Templot donations fund permitting).
(Templot2 tries both servers if one is down.)
The OpenTemplot version won't require a server connection, unless the contributors to the project (if any) decide otherwise. On the other hand I won't be supporting it much myself.
I shall continue to refuse to answer any support questions from someone not using the latest version of either. If at some stage I decide not to do any more support, I shall remove the "phone home" requirement from Templot2.
Pascal is easy to learn, and OpenTemplot will be compiled using Lazarus which is free. I'm hoping that hobby programmers will get involved -- the professionals are too argumentative.
There is a topic here about starting in Lazarus, which I intend to expand on once OpenTemplot is released: