I'd be in a panic!I agree with you on that point. My DE razors, all vintage Gillettes until my Fatip arrives, all prefer a certain level of sharpness. As a rule, the milder the razor, the sharper or more aggressive the blade I use in it. I think of my Tech as being the mildest much like your AS-D2 and I prefer using Feather blades in it, but even in it they can be a bit harsh and my lather needs to be on target for the best shave. The Gillette Yellow or a Kai may be the better blade in that razor but I havent tried one in it yet. I have 200 Feather blades and only 4 Gillette Yellows left and a single Kai blade haha.
My D2 SS is nearly as mild but I dont really like a Feather blade in it. I have a Gillette Yellow in it with 9 shaves on it now and it works great. I have a Lady Gillette thats similar to both the Tech and the SS in that I prefer the sharper blades with it, but I rarely use it.
My NEW SC is nice with a Feather blade but "the planer effect" really comes into play. It will quickly, easily and efficiently plane off any high spots if I'm not careful with it. Much the same as a Gillette Yellow in it planed off my skin at the base of each hair on my neck leaving me with red spots all over, but no blood or pain. After that first shave with the Yellow in my NEW SC, I moved it to my SS and its been there since.
My Gillette Regent Tech is much the same. With a Feather blade it's given me a 23 hour BBS shave. Very close, but not as comfortable as I like. It has a Perma-Sharp Super in it right now and that blade has given me 5 very nice shaves so far. Smooth and comfortable with the BBS finish lasting around the 10 hour mark. I'm coming to really like this blade. Its a blade that balances sharpness and smoothness very well.
All razors have different geometry to their designs and all will behave differently for everyone, but it is nice knowing which blade someone prefers in which razor and why.
I agree with using a larger bowl as well. Mine is 6" across and 2 1/2" deep. I think the larger bowl lets me work the lather easier and quicker with more control over the viscosity of it. Getting the lather just right is critical to having the best shaves.