Dubnyk should be a keeper since he's the safest out of the four. He's the one who will be the most likely to have the most starts this year, thus greater output potential.
The idea of keeping Nabokov may depend on your propensity for risk on your team as I feel his value is tied to 1) a trade, 2) a trade to a team that wins, 3) a trade to a team that wins where he can become at least a timeshare net minder.
I share your sentiment that the final spot should be between Bernier and Schneider, and I'm leaning towards Schneider with the optimistic idea that he'll most likely be traded by the deadline. With this in mind, he may get traded into an opportunity to elevate from a dependable #2 to a #1 spot that he has the skill and potential to claim, benefitting a playoff run at the end of the season for your team where he'll suddenly be putting out numbers as a starter.
League: 10 Team H2H (2nd year)
Team: 8 F, 4 D, 1 U, 2 G, 8 BN, 2 IR (5 Goalies max)
Categories: G(5), A(3), +/-(.5), PIM(.5), PPP(1), SHP(3), DEF (1), SOG(.5), GWG(2), HIT(.5), BLK(.5), W(5), SV(.3), SHO(5)
F: E. Malkin, Z. Parise, I. Kovalchuk, J. Toews, B. Ryan, E. Staal, A. Semin, M. Havlat, R. Callahan, R. Bourque, M. Moulson, S. Ott, M. Read
D: S. Weber, D. Boyle, P.K. Subban, D. Seidenberg, E. Karlsson, J. Pitkanen
G: M. Fleury, R. Luongo, T. Vokoun, J. Halak
IR: T. Hall