Yeah, I get the feeling that now, with the release, we will REALLY start to see the CORRECT changes that are needed.
As much as I would like to say that this "Pad Restriction" is a nice way to help isolate "weaker" ships from those capable of ripping them apart, the fact that primarily trading vessels get "locked" out of trading and refueling at outposts really makes trading, and more importantly mining, in these "large" vessels more effort than profit.
I think that the best solution would either be to a) have just one Large dock on all significant outposts or b) have "Large" vessels trade/refuel/repair via "pods." Get within a certain distance and hail the station, then any and all transactions would be dealt with via work drones, with potentially a cooldown timer/action timer that acts as the loading/unloading of the craft.
There is only one other option I can think of, but the solution also has ramifications for other aspects of the game; vastly increasing the Jump Ranges of these large vessels. If the vessel doesn't carry cargo to stations/outposts reliably, doesn't perform well in combat, and tends to deplete a player's purse without significant "grind," then it needs to come out of the box as a great "Jumper." And by that I'm talking like 40+ Ly... only as I said, this fails to balance Rare cargo, and will also cause significant changes to exploration, I'm sure.