FIGHT! Up to this point, they haven't. Almost all of Pokemon's consistency has been in the form of once-per-turn Supporters, or requiring a massive setup (multiple Zoroark-GX). Shaymin-EX has been sort of weird in Expanded, it's been ok. It's helped combo decks do their combo thing more consistently, but it's come to a head that can't be ignored anymore. Then we can address that problem 5 sets from now. In an ever growing format, banlists will always get bigger. I mean, look at Yugioh. There were complaints. Lots and lots of complaints. Look back last season at Zoro-Exodia. It was one of several cards pointed at as being a problem. Red Card and Delinquent were deemed the bigger problems at that time. TrevNoir hand lock got Top 8 at Dallas. And Turbo Dark was THE DECK to run for the event and looked like it would destroy TrevNoir effortlessly. And TrevNoir got Top 8. When SwSh came out, it was still one of the top decks to run. Now it's one of the only 2 decks you can run. The only thing it has in common with Turbo Donk: Shaymin-EX and Net. Without Shaymin, Net isn't Broken. There isn't a single deck that becomes busted and will dominate the meta in the same fashion as TrevNoir hand lock if Net stays unbanned. Additionally, Zoro Exodia was a "second turn hand lock" and that deck got destroyed by the banlist. And now with Crobat V, "Shaymin #5", the combo gets an ever bigger consistency boost if left untouched. Even if you banned Net, you could still use Super Scoop Up and the 1-of Scoop Up Cyclone (if you aren't already). The combo will still be viable. But honestly, Milotic will more than likely get a ban as well (as it's Ability lends to the idea that it was never expected to be used outside of EX-era). Multiple things will get hit, but Shaymin-EX is almost a shoe in.