Your history is incomplete, I had to say something.
Also https://www.achtungpanzer.com/grille-series-cricket-series.htm is NOT A SOURCE. Just like wikipedia is NOT A SOURCE.
I will be using my GW Tiger Article from FTR and some unpublished material for my GW Tiger Part II article to correct the History section. The whole dismountability was dropped in 1944 due to the added complexity and the GW Tiger was going to be completed like a normal GW. ie. Hummel and Grille.