I used to be in favour of a tire war and refuelling but have since reconsidered and am firmly in the no camp.
Tires because I don’t want who has the best tires to determine races. With Pirelli as sole supplier every team works with the same benefits and limitations.
Refuelling I’ve gone to no for two reasons. It’s costly and it’s questionable whether it actually increases overtakes. It definitely hinders on track overtaking. I’ve seen images similar to this quite a few times
It does create some variability with positioning and strategy but I’m not sure if actually helps the on track entertainment.
I’d me more in favour of 2 mandatory pit stops than multiple tire manufacturers or refuelling.
Here’s a chain bear video explaining why. (He makes awesome videos BTW)