Cant help with the Steam Savegame issue but I will say this:
It has an arcade mode, realistic mode, and simulator mode.
If the game isnt making you happy you are probably playing it wrong.
As for the Janes games, I heard they didnt make the profit they wanted to keep putting out new games. So they stopped. For reference, the best one was Fighters Anthology, cuz it had all the planes, and it was the only one with 3D acceleration. All the other had been made for DOS/Win95, which didnt use 3D acceleration.