For me the fuel/tire consumption adds an extra layer of strategy and planning on top of the active action right in front of me. I can see how winning from the top half of the field running on an empty tank (or you losing from the same scenario) can seem kind of empty to some, but for me it builds my excitement knowing I've picked the better strategy, and now I don't actually know who's going to win. Plus it really gets your adrenaline going when you're on your last drops of fuel, battling a rival or two, and still have a couple corners before the finish line.
Beyond that though, I've had races where maybe only one or two people actually ran out of fuel, but the strategy adjustments left the entire field flipping throughout the race. It kind of started with one group pulling ahead and taking the fast/less efficient route, a second pulling back with a slow/efficient route, and a third staying on a middle ground, seemingly trying to sit at a steady pace that they could stay at consistently for the entirety of the race. I was somewhere between groups two and three, and early on the leader switched from 1-2, and then after a few laps a lot of the 1st group followed suit and pulled back their pace, mixing with group 3. More people pulled back and I ended up in the top 5 for a bit, and then suddenly a little past the halfway point most of the people who'd started taking the slow/efficient route opened the taps and I started getting overtaken by most of there field over the next two laps. Then again a lot of people dropped back to save fuel, and I moved my map down a notch or two and started contending for the top three. I ended up pushing too hard and wrecked myself near the end, but up to that point it was one of the most exciting non-direct races I'd had. I wasn't just thinking about the moves people would make in the next few seconds, I was also trying to tune into other drivers minds and see what pace they were trying for in the long run.
I wish PD would make some of the Gr. N classes available for the C races, there was some good matches in N300 towards the end of the beta.