Decks are still too fast/not interactive at all, and we're left with clunky mechanics and vulnerability to some major maindeck cards out there in Abrupt Decay/Scavenging Ooze and bad post-sideboard prospects. Tasigur, the Golden Fang is good, really good - but it's sort of overhyped by now.
All in all, Raven's Crimes are not good enough, Flame Jabs are now kinda bad and the BGx shell is very efficient against this archetype. If we get to improve our chances against non-interactive combos/speed, we MIGHT have a chance, but we'll still be on a tough spot G2. We are soft against combo, slow against aggro and get beaten by maindeck cards in current iterations of the Midrange decks. We're out of linear midrange/control matchups where Raven's Crime excels. And the absence of Treasure Cruise hurts the needed CA to make RUG lists work without losing too much in speed.
At least before bannings we could improve our Delver matchup with cheap removal and the Pod matchup with maindeck Anger of the Gods. Today, this is not enough - I'm out of ideas.
You could probably cut a decay to the board, and then drop the bojuka bog to make room for the 4th assault and second tasigur. You already plan to switch pack rat for worm harvest so we don't need to go there. What does your sideboard look like?
I've been messing around with Levy's PT list but adding 4 Young Pyromancer and a land for Squee, a Liliana, the maindeck brownscale and pharaoh. I know he said he wasn't into YP, but my biggest issue by far playing his PT list is you are SO threat light that you frequently lose games even when you get way ahead and have a billion cute interactions set up (see Squee + everything).
Pyromancer is another threat that must be answered because although maybe it's not as abusable here as it can be elsewhere, it's still a great cheap threat that ends games quickly in combination with any retrace spell.
So far, I really like it. Bloodghast and Smallpox in the same deck is just awesome.
I couldn't find anything in a search that has that level of search to it, other than trek. I did find Ainok Guide which only finds you 1 land. That is the closest thing to what you are looking for with a small fraction of the effect.
Isn't that what Countryside Crusher and high-land variants are for? Which is fun and powerful but ends up being uncompetitive because it's too slow and fragile and doesn't have enough flexibility. Fine in a budget meta though, I had fun brutally crushing some other budget decks with a 43/44-land version similar to the Woo Brew one awhile back. If you do come up with something with the blue cards, even if it's not very competitive, share it with us for funsies.
Not sure why I haven't tried that when considering anti grave-hate options (saving Loam with an instant draw). Three mana is a lot for a deck that can usually use every mana available already, but I will probably try it out as a one-of to find out how often I end up casting it.
The main issue I can find with those options is speed. Twin, junk rhino, infect and affinity are all doing well currently and those spells just aren't mana efficient enough for the speed of the format currently.