You still didn't understand my point. :P :D
The scattergun, as it is, is a fabulous primary weapon and there isn't anything that comes in my mind or suggestions that I've read on various forums that would make a scout player drop it for anything else. Unless it's a complete buff, with no real downside. So far, the primary weapon upgrades for the other classes are either situational or just downright useless.
Hmm... That I don't quite agree with.
I mean - consider the Medic. Both the Ubersaw and the Kritzkrieg are viable alternatives to the main weapons (especially after the Kritzkrieg buff) and the Blutsauger more or less completely replaced the Syringe Gun (well, I think the Ubersaw might have done the same to the Bonesaw). Then, in the Pyro pack there's indeed a situational upgrade, the Axtinguisher, but melee weapons are not that important anyway (and the Axtinguisher benefits from the Pyro being a close-range class) and the outright useless Flare Gun but the choice of a primary weapon is very balanced - guaranteed crits from behind and more hp or the air blast? You can use both successfully.
The Heavy update introduced pretty useless upgrades except for the sandwich which is only good when there's no medic around but the upcoming Natasha buff might change that - I always thought this weapon had potential with a slight upgrade but the damage output was unsatisfying and the slow-down effect was laughable, both will be accounted for in the update, apparently.
Ah, and keep in mind that Valve reads player suggestions but has no problem with completely ignoring them and going against the flow. I haven't seen a single good suggestion for a scattergun replacement either but you know, this is the internet, it's full of crap. ^^