I've been playing a list very similar to the one listed above and have been having a good amount of success locally (Chicago).
Last night I beat BUG Delver, Manaless Dredge (relic+pithing needle on phantasmagorian is basically a hard lock), and RUG Delver, losing to Esper Deathblade after splitting the finals (actually lost to my own mulligans).
My meta is largely fair decks (tempo, stoneblade) with a smattering of combo (dredge, storm, mud, etc). Most people have multiple decks, so it is hard to know what exactly to prepare for week-to-week, which I think is actually a good thing in terms of preparing for larger events. It keeps me from warping my list, and demands a well-rounded 75. Here is where I'm at currently:
12 Island
4 Wasteland
4 Mutavault
4 Cursecatcher
4 Silvergill
4 Lord
4 Master
3 Phantasmal
4 TNN
4 Vial
4 FoW
4 Daze
3 Standstill
2 Spell Pierce
In my mind, this is a fairly stock maindeck at this point, though I see a lot of people still playing Reejerey. I just can't envision the deck supporting so many 3 drops and TNN is so ridiculously more powerful than Reejerey. Why cling to the past when the future has arrived?
I could see trimming a standstill, but don't know what I would add in that spot. Standstill is one of the more generically powerful cards in the deck and isn't terrible against too many matchups.
Another point of divergence recently is the trimming of colorless lands to fit in Caverns. I think I understand the appeal, of getting around Dazes and Forces, but aren't the decks playing these counters already good match-ups for us? I don't see how a deck playing Daze and other soft counter effects should ever trim Wastelands. I guess the real appeal of Cavern is being able to cast TNN without fear, but this seems like a sort of training-wheel mindset to me. I'd love to hear arguments to the contrary.
As for the sideboard, I've been relatively happy with the following, but am not 100% on the last couple slots:
3 Submerge
3 Relic of Progenitus
2 Pithing Needle
2 Dismember
2 Kira
2 Swan Song
1 Jitte
I'm not completely sold on the 2nd Kira or the 2nd Swan Song. Kira just seems so great against Delver decks' spot removal, but going up to six 3 drops against them seems fundamentally flawed. As for Swan Song, I think I prefer it to Flusterstorm, Hydroblast, or more Pierces as weapons against combo, but am eager to hear arguments otherwise. Maybe its just a matter of which combo you expect to play most commonly. Swan Song is sweetest against SnS, Fluster against Storm, Pierce is the middle ground.
I also saw the recent tech of Carry Away, but am scared of REB's out of UWR Delver as a major blowout. Pithing Needle has served me well as a catch-all answer in many matchups, and also neuters jitte/stoneforge wonderfully. That said, Carry Away seems like it'd be amazing if Esper was by far the more popular flavor of Stoneforge deck (having no REB's).
I'll be playing this list (give or take a card or two) at the SCG in Indy this weekend and hope to do the Lord of Atlantis proud. I'll try to report back with anything useful I learn.

