Iowa had most of their staff laid off earlier this year (replaced with some assistance from Kansas) and NASCAR has already owned it for several years with no real changes. If they wanted to make a move there I think they already would have. Summer rumors were it may be preparing for a sale/Penske may have to buy it.
A Cup dirt race at Bristol sounds pretty hokey honestly, especially if it’s a replacement for the spring weekend. The track probably puts on the most consistently good racing anywhere in the series right now so it doesn’t seem like something to mess with, to me at least.