Another point of discussion with Crucible is whether or not this potential metagame would be a bad thing:
What's out:
Fish/Landstill (can't deal with recurring Wasteland on manlands)
4CC/4 color Tog (can't deal with being cut off on colors/being forced below a mana threshold)
Combo/GAT (can't deal with heavy Workshop fields)
What's in:
Workshop decks (this is what would knock out combo, mostly)
1-2 color aggro and aggro control (stuff like Food Chain Goblins, Madness, etc.)
1-3 color (basically running like 5+ basic lands) control (Control Slaver, mono-blue, possibly 3 color Tog)
Affinity (based entirely on the number of Null Rods floating around)
JP: Do you really think that the decks listed in "What's out" are really out? I don't, but I do see that those decks need to evolve in order to compete now.
I've seen B2B Hulk and 4cc win in an environment full of Crucible_Stax decks. Also, Fish puts up an excellent showing as long as it runs 1 or 2 Crucibles of it's own along with a complement of Annul's. I agree that 4 color Tog and GAT are at a low point right now. I think the flexibility of 4cc is the only thing giving it a chance to compete
(for all of you about to say "xyz deck is flexible too!", I mean that the Archetype that includes 4cc, Keeper and The Deck have always been designed to operate in any environment. That was the basis for the Type).TPS continues to hit the top 8, so the FoW backup along with 'going off' with the combo seem to be a good hedge against Crucible-based Workshop decks.
I know you already recognize this point but I'm saying it for the benefit of those who don't see it: Crucible is making us re-think our deck construction
and playstyle.
For example, B2B is an amazing tool against Workshop decks. What we are seeing is that some of the new cards are forcing players to consider running colors or answers that they would not normally have run. If I run B2B, now I have to run Blue. I also have to run a lot of basic lands. This almost sends us in the direction of Mono Blue so we can run FoW and Mana Drains.
Even Sligh may have an opportunity to make a new showing in the current meta.
In my opinion, the first coin flip now occurs before the tournament begins: do we play basic lands or non-basic lands. That will determine what arcetype we play with. To answer your direct question ("whether or not this potential metagame would be a bad thing") I say that an environment that doesn't allow for a 4cc archetype definitely has problems. I think that multi-colored-blue-based-control should always have some decent chance of winning, and when it doesn't, then it means that the environment is distorted.