Sturmgruppen

[CJE]

If the experiment of Sturmstaffel 1 was as successful as to catch the eye of Galland and Göring (particularly after Oschersleben), why only three Sturmgruppen were set up?
It certainly was not the shortage of Fw 190s as the output reached new heights (over 5,000 A-8s and A-9s delivered between June and December 1944).
So what?
Lack of confidence in this new method?
Did the Sturflieger clash with Galland's concept of the "großer Schlag", while he was building up reserves to strike a big blow at the 8th Air Force?

Thanks.

Chris