For CFWA I mostly use the kit lens with the Nauticam WWL-1. This provides a nice wide field of view and the lens allows zoom through and clean corners. The WWL-1 also works very well with the Sigma FFL 19mm lens. Fast and sharp and full 130 degrees FOV.
I sometimes use the little Sony 16mm pancake FFL lens behind the Nauticam 4.3 inches dome. This is very compact. The little 16mm lens has two optional auxiliary lenses, a fisheye and a wide(er) angle. I find the wide angle more useful and cleaner focus. The fisheye shows distortion in corners and does not clean up until about f16. So it would need stronger strobes than I have with my current little Inon S220 strobes.
Currently, for macro, I use the kit lens with the Nauticam CMC1 and 2 and prefer the -2. I am planning to order the new wet mate corrector lens for the kit lens and that will allow me to do normal fish pics, semi-wide angle and macro on the same dive using either the swing out lens holder or bayonet options.
Sony, if you listen here ever, please give me an APS-C Alpha with 1/250 sync or the new global sensor and please, please, please, a short zoom full frame fisheye lens, 8 to 12 range would be really nice. And if it fit in my existing housing even better but I know that is too much to ask for. Oh, and preflash cancel would be nice too.