I do agree that my idea of just accelerants is not great. I just never enjoyed getting hit by a random a turn zero (often protected) flash, and I think that every deck having large amounts of ichorid hate in their sideboard can be considered a format warp.
I mentioned my old theory because I wanted to approach the concepts of the broken early game laterally. -Though it did lose most of its purpose when most of the cards it was meant to deal with were restricted.
I actually like Nineisnoone's idea of a season idea more though.
pre-season, EVERY CARD is unrestricted. Of course, it's "pre-season" so it doesn't matter. Once the regular season starts, a restricted list is posted. Generally as bare bones as possible. You can even let cards that get release during regular season get a free pass until the next one starts. It doesn't really matter whether it is "correct" or not. Broken eras are going to exist anyways, and in this format there will be a seasonal rotation (or rather a seasonal reset) so it won't really be a problem. In this way, the DCI can be more willing to "let things happen," since there would be a natural end to the inevitable problems anyways. Once the official season is over, the process starts again
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Most of the players I know play extended during the ptq season and occasionally legacy for grand prix. Giving vintage a season would work out well, because during the season I could see vintage getting some attention.
This could, if developed into more of an idea, be something good.