I am currently on-track to cross over 50 nights for 2020 and based on projections for the rest of the year I most likely will be at 90 nights though I am focused on minimizing my leisure trips this year so that I can save for 2021.
There is honestly no incentive except perhaps the SNAs at 50 and the FNA at 75. I do wish Marriott offered more elite choices at 100/125/150.