Absolutely, but that doesn’t change that they existed before their Khans printing.

That being said, Dig through Time is a necessary card for hand-intensive combo decks like scapeshift with the preponderance of cheap discard available (Loam/Raven’s Crime, Liliana) and is generally a “fair” spell. It does not refuel to the degree that Cruise provides to it’s decks, and due to mana requirements does not permit the same multiple-spell-plays-refuel-multiple-spell-plays turn after turn that makes Cruise bad for the format.

In fact, the banning of cruise with the preservation of Dig through Time may actually allow for a proper control deck (4c Gifts and UWR, you don’t really count. Sorry. Gifts is a combo deck, as is U Tron, UWR is tempo so only really plays control 50% of the time (or less)) to exist in modern which would improve the overall health of a format defined by more or less aggro, combo, tempo, and combinations of the three.

I gotta agree with Derek on this one…the players who love TC are screaming that it’s perfectly fine, but it’s clearly not. They banned Ancestral Visions from the get-go and that one usually goes off on turn 4 (if you’re lucky). TC can actually go off sooner (I’ve seen turn 3 plenty of times). It has completely warped the format. It’s the Brainstorm of modern (and plenty of players have wished brainstorm would get the axe in legacy), except Brainstorm still nets 0 cards (you trade 1 for 1), while TC actually nets +2..for 1 mana, even legacy banned Ancestral Recall…and TC is just the next iteration of it.

I’m not saying that Treasure Cruise decks are unbeatable … Wizards has made it very clear that they do not want one deck to be a large portion of the metagame … which is why cards like Bloodbraid and Deathrite Shaman were banned. Jund was just as vulnerable as the Blue / Red Delver decks, but it was represented by greater than 20% of the field and Wizards felt that was excessive. Blue / Red Delver has seen similar representation on MTGO (the only real sample group for Modern).

Beyond that, Treasure Cruise is more splashable in Modern because mana bases are less vulnerable due to the absence of Wasteland … if it doesn’t get banned, then it will quick become standard practice to just jam a few cruises in any deck that that has a flex spots.

As far as adapting and creativity, that sadly isn’t a real option. The bulk of the player base follows trends presented to them by big players at big tournaments, with a noticeable lack of real support for Modern from Wizards, we’re not going to see near enough innovation out of necessity as we would if there were entire Modern seasons.

Unbannings – yes, this is a great idea but the few cards left to unban are ones they’ve banned since Modern’s inception. Bloodbraid and Deathrite were not entirely oppressive, Jace would probably be fine, but beyond that what cards still have a legitimate case to be made for their unbanning?

Khans/Onslaught fetches were not legal in Modern until the release of Khans, because, well, they only were in Onslaught.

I do agree with your points, I want to pick up more Fetches.