It was always very intriguing strategy-wise, trying to discern what fuel strategies people were on, etc, but there wasn't a lot of passing on the track. The mistake I think many people make in that regard though (not y'all) is just assuming that the presence of refueling was the primary driver of the lack of passing. It was a completely different formula with super-durable tires that lasted a full race. Currently there wouldn't be much passing without DRS, either. In the refueling era they had no DRS but had the same problems following closely. Probably worse in that regard. I dunno if refueling would help with variability in the current F1 world. It might, or might not, but the automatic assumptions that many people make about its effect on the racing are overly simplistic imho. There are so many factors to consider. One way it could help with variability would be when some cars at the start of the race are fueled heavy to go further without stopping, vs others that fueled very light to stop sooner, creating performance differences among the cars on the track.