?? I'm pretty sure I know my own design better than you. They were never meant to replace Volks, as we wanted to specifically avoid a Conscripts/Penals situation.
I am pretty sure you know my own designs better than me also, with all due respect to all the work you guys do, I am not sure if your designs are the best solutions to achieve your goals thou.
In any case you need to talk to the people writing patch notes:
"Panzerfusilliers
The way Panzerfusiliers are deployed has been changed to better match their role as an alternative mainline infantry to Volksgrenadiers. They will be slightly weaker than Volksgrenadiers at the start but have access to the Anti-Tank Rifle Grenades, slightly better combat veterancy, and more powerful upgrades, giving them increased power in the late game. This should make for interesting choices and compositions."
Definition:
alternative
"something that is different from something else, especially from what is usual, and offering the possibility of choice"
So it according to patch notes means replacing VG and not "supplementing" them.
And again as a solution I do not really see how making PF bailable instead of call-in makes better at "supplementing" instead of replacing VG so why bother with the deployment changes anyway?
Finally if Penal being a "alternative" mainline infatry to conscripts is a "undesirable design" why keep insisting on it for the last 3 years spending so much energy to make it work (having to change so many units) instead of giving up on it and choosing a better design?