ORIGINAL: GodwinW
No I don't think you really want that. It will get increasingly complex to figure out why and how things work if you have multiple truck stops bringing trucks with varying amounts of AP left to Supply Bases and either not benefitting or benefitting. It will be a mess. Try figuring out where to put a Supply Base to be the most efficient in that case! Can't put it close to any truck station in order for the points not to be wasted. Even more Supply Stations will need to be built (as roads tend to split as they get longer) and your logistics would be even weaker to enemy attack.
Imo it's a really good thing that it works like jerrycans that the trucks pick up from those stations, not like a regular gas station where they fill the tank.
I don't think I've really made myself clear because what I'm proposing would definitely not be overly complicated. (It would make your logistics network more spread out and potentially vulnerable to enemy attack but I see that as a good thing.)
I'm not sure how it would all work. Right now the way stations and bases upgrade involves a lot of fiddly numbers and the way the two work fundamentally differently adds complexity. As I explain the alternative I'm imagining I ask you to excuse some hand waving as far as exactly what the numbers would be and what all the stats for upgrades would be and so on.
I propose:
Truck stations (motorpools/maintenance yards) and supply bases (gas stations/rest stops) both serve the function of refueling trucks that pass-through or start in their hex.
Truck stations would send out truck logistics points each turn (as they do now).
Each truck (really each packet of truck logistics points but bear with me) would have fuel/range points that would function as action points do now.
A truck passing through a station or base would restore it's range points to full. (Note that this means that stations don't necessarily have a range advantage over bases. Idk if that is a major problem.)
Under this system an ideal logistics network would have one or more stations surrounded/interconnected by bases spaced out such that each is just within range of its neighbors. However the details of road layout, intersections, and strategic vulnerability should encourage the player to adapt their layout to their circumstances.
Some notes:
I suppose that truck logistics points would start to taper off after they run out of range much the same way they do now. So for example you might have full points within 5 hexes of your city and then some points in the next five hexes and if you build a base at hex 5 you have would have full points out to 10 hexes and some and points in hexes 11 to 15. Since these extra hexes of range with tapering away points are basically a bonus that each truck gets once per turn/deployment this is an effect you could buff if you wanted to emphasize that a loan truck station is significantly better than half as good as a truck station supported by a supply base.
Getting a little more into the nitty-gritty it seems like it should be feasible (and fairly intuitive for the player) to actually track the fuel consumption of the logistics network under this system. When a logistics point is consumed it is understood that that means a truck drove such-and-such path to get there so it should be easy to see where fuel was used along the way to refuel the truck.
As far as upgrades go for sanity sake it seems obvious to me that individual truck range should no longer be effected. Instead I am (rather vaguely) imagining a bandwidth based system where bases can't actually refill _every_ truck coming into their hex but only the first however-many based on their level. I suppose this is where things could start to get dangerously complicated with the bottlenecking of logistics points themselves but in principle I don't think it's actually a more difficult problem than what the player is asked to deal with under the current system.