The Spirit Guids have dissynergy with Oaths. I wonder if Oath fits at all. It is risky since an opponent could trigger a Hidden card so he can Oath up DSC.
I am also not sure about Black Vice. It seems to have nice Synergy with the deck, but only taking 3 life a turn is probably not good enough.
I would say drop the Oaths and probably the Black Vices. Then add Tarmogoyf and possibly Mold Adder.
Adding the first color is basically free. Going to white gets enough extra options such as Teague and Mindscensor so I see no reason not to run at least white.
At that point the question is whether City of Brass, Gemstone Mine and Birds of Paradize are enough to add the broken cards. In this case, I am not sure.
Argh. I can't believe I ESG+Oathed.
Goyf and adder were my thougths for the alternative build too, and you're absolutely right that vise is somewhat on the weak side.
Metsu: Doesn't glowrider and canonist perform roughly the same role? I have yet to see the big thing with canonist, as it only seems to force the opponent into playing his bigger-than-yours spells a tiny bit more conservatively and can still counter and draw during your turn. It is obviously good versus TPS, but shouldn't glowrider be covering that well enough maindeck? Glowrider seems way more versatile, and I'm surprised it doesn't see more play.
I'm somewhat sceptical to manabirds in fish, and would rather duress or null rod/needle turn one, but your three-drops may be strong enough to justify them. One downside to the whole birds+glowrider+mindcensor package is that you become very vulnerable to darkblast, contagion, triskelion, fanatic...
If you see that you could skimp on some hate-creature or the other (I'd cut canonists, but metas differ, obv), try the full 4 pridemages main. The pump matters, they're highly versatile and they save sideboard slots.