Wouldn't making a face like that kinda defeat the purpose of using the material you created the res out of? I mean the current face plates where to break up the in_your_face_ness of the res, to help blend it with peoples cases.

I'd personally rather have a res made out of non_clear material (that black plastic stuff used in videocard block tops) and a replaceable window. Then there is a lot less worry about cracking it, and the kind of fluids you use. If the window breaks, replace it.

Something like this:



Red = o-ring
Clear = window
Teal = fluid in res
Purple = screw to hold window on

Of course it can be done a lot nicer I'm sure. I just made that in MS Paint to illustrate the idea. That black plastic stuff might be better at dealing with vibrations from the pump too