There's a contingent of Vintage players that don't understand how to create, interpret, or in any way use data in a positive way. They tend to be more enfranchised players that did well long before Black Lotus was on MODO and the online data was an option for them to improve their game. They become bitter when they see people use the new ways to become better than the members of the old guard. They think they're just as knowledgeable but simply don't have the time to prove it due to adult duties such as children, aging parents, or any other aspects of reality. They use the term "noob" as a negative epithet because it's how you insulted your fellow gamers twenty years ago.
Please don't stoop to their level. Your streaming content and intelligent posts are far more important than shit-slinging with the bitter has-beens. Please be better.
The London mulligan will be permanent with the release of Core 2020 on July 12, 2019.
It's not about making more deck types in the format.
I think there is room in Vintage for many more decks in the meta-game and I think the cost is preventing new players from getting into paper.
Ok, buddy. I'll answer the OP's question while you answer the ghosts in your head.