That's a very broud range of options for just one shotgun to fill. If you hunt waterfowl from any kind of blind, reloading either a SxS or O/U can be annoying. As already stated, they're at their best as an upland gun. With an auto, you're going to have to be able to cycle very heavy turkey loads as well as the opposite end of the spectrum for skeet. That'll challenge the reliability factor of most autos. Be prepared. A slide action is not at all ideal for skeet, though fine for trap.

I've seen quite a few Benelli, Browning, and Beretta autos lately (the "three B's" again) in the leagues I shoot. I've used Benelli and Browning autos on geese and they worked just fine. If you really want to cover such a wide range of options, I think you'd best plan to spend some coin in those directions.