I've made some research to figure out why A10A has blurred fan all the time.
My first though was that A10C has enhanced model, that's partially true and I will describe it in later part of this post.
Well basically A and C model is using two textures to imitate engine spin. First it uses static texture for idle and low rpm then it starts to use blurred one. For some reason only C model has transition implemented. A stays blurred all the time. When this idea came to my mind I decided to edit Polish Air Force green livery made for C to see how it works. I swapped blurred part with static and it worked out great. Well at high rpm it sux because it doesn't look like it's spinning very fast (not super smooth 1000fps animation).
So please ED implement this, if you are working on it then great.
Second part:
A10A has some holes in cockpit caused by external model swapping.
I was doing experiments with A10A and A10C models yesterday to find out how fan spinning is implemented. I have swapped .edm files with each other to see if it's fixing issue, it didn't fixed issue (see first part of my post) but I saw something else. Cockpit holes disappeared. A10A became solid aircraft :D
There was no internal testing with TrackIR or what ? Come on, it seems that some modeler rushed and didn't tested how it blends.
There was one catch, in external view MFDs and all C instruments were visible. Fix doesn't seem to be hard, just copy C model again or whatever you were working on and cut it for cockpit, but this time do some internal testing ;)
Sorry if it is hard to read, I'm not native english speaker.