Many people here and in the media think the 3-3-4 format is likely, but I don't. The problem is that all attention is focused on the elimination cut line... who is below the cut point and who is dangerously close to it. TV and other media just naturally goes for those storylines. And the best performers who are running up front and winning races are somewhat of an after-thought. IIRC, Nascar brass acknowledged this inherent drawback of an elimination format such as we've endured since 2014.
My prediction is Nascar will return to a 10-race "chase for the championship" with a single points reset after 26 regular season races. However - and this is very important - there needs to be strong initial seeding based on regular season wins and high finish in regular season points. The 2004-13 chase was almost entirely divorced from the regular season, and that flaw needs to be fixed.
IMO, the full season 36-race points accumulation only works if the reward for race wins is massively increased. The current points scale per race is far too flat. It over-rewards mid-field performance and under-rewards race winners and top-5 performers. That's been my main problem with NASCAR points since 1972 (when I first learned how the points deal worked). I seriously doubt NASCAR will fix that... so I favor the 10-race chase to make it less likely we get a "coast-and-collect" champion as we have various times in history. Racing to protect a points lead is dreary stuff. Let's not go back to that.