>>19904chan is a counter-culture containment site. If you're serious on buying it and adding all of these changes, the incels would have to migrate elsewhere, I'm just afraid the underage redditors may not be able to handle (or even be aware) the other chan sites and would migrate to reddit making it more cancerous than it already is.
Don't change the layout, the layout is the only thing I like about 4-chan style imageboards. I do want to know the other minor details though.