Ok, now you upgrade to Sealed Roads: relocate Supply Bases?
Yes, that's probably the critical point, for me.
Besides, if a player doesn't want to put Supply Bases right next to their city - or right on top of their truck station, when it's outside of a city - don't do it. Nothing requires a player to do that.
If it makes more sense to you to top off a truck's gas tank after it's traveled a little bit first, then you can always do that. So this doesn't actually affect anyone who doesn't like it, right?
True, you can totally play as if it works that way.
Well, with 1 caveat: if supply bases would be refill stations there would be no end to the amount of refill stations you could plonk down on one line.
Realistically anyway. It would become way less intuitive that Supply Bases can only cater to 1 truck stations's trucks once.
Maybe players who want it working differently want to string lots of 'gas stations' for unlimited dirt road logistics, but I would think that breaks too much of the finer points and gameplay of the whole logistics system.
So, not a good idea imo: keep them as they are.