I like the Loam version a lot, but def opposed to cutting Crypt. Lock + bazaar is one of the best T1 plays. Plus loaming thru my own spheres, and tomb#5 for DarkStage and the occasional grave troll finish. The only times I've lost to crypt rolls is when they waste my bazaar which is a tough slog regardless.
I haven't played since my last post until tonight. The London Serum Powder interaction is more complicated than I assumed but still a very comfortable improvement. I went 4-1 w this, only loss to a maestro w T1 Containment Priest both G1+2.
4 null rod
4 grave troll
4 hollow one
4 w leyline
4 b leyline
I brought back sanctity after bad record v oath w last iteration. If I were to cut white leyline again, I like needle over spyglass, bc unlike stax, not trying for long term denial (ie dack/jace), only defending Marit for one turn, so their hand info isn't tactically relevant, and I want to be able to cast via Stage alone, regardless if Shop still in the deck.
Postboard Vs Pyromancer/Survival/Oath Ive found they're pretty good at still playing their hand out through minor locks, and if they hit my yard, I feel dumb starting from scratch w just a sphere in play vs their regular threats. I'm more concerned about spreading my wincons against their hate.
I have yet to face eldrazi w prison dredge.