The thing I don't like about no refueling is however exactly that everything just relies on the tyres then. With refueling it's at least some juggle to find the best compromise in between the best option of fuel weight vs number of pit stops and best tyre compound, it's durability (falloff) and number of pit stops needed, again. Together with the thing that an imperfect strategy can beat a perfect one if it's (successfully) tailored to use traffic better to its advantage the set of viable strategies is limited but on most tracks not to one option only.
Currently the tyres are already a very strong deciding factor and despite the ongoing efforts to balance them I wouldn't bet it'll successful enough to offer a variety if they're the only factor. Additionally I'm not so sure if strategies will be much fun if it's just a matter of tyre choice and deciding when to stop, then best just a little bit earlier, rather than the later now, than the competition but not that early that it compromises the tyre health later into the race too much, instead of the current dragging out the stint that much that tyre degradation weights heavier than the advantage of way less fuel.
The thing about lessen the fuel weight effect is that it's still not enough to make an undercut viable because as long as there's fuel weight at all the stopped car will always be heavier, it'll just reduce the amount a tyre can be run into wear before it outweights the fuel advantage and thus it limits the options of performing a successful overcut. Thus it'll more likely to limit the tactical options instead of improving them and at best makes no difference.