I can't feel any difference between the long and short scales, after all
it is only equivalent to about 1/4 tone, so I'm not surprised by your
experience.
We all have different ideas about what sounds good, but I've found that
the pickups are more important than the string gauge within reasonable
limits - I like P90 types and SD Jazz, which are bright by humbucker
standards. The guitar also makes a substantial difference, even though I
often refer to it as "just a fancy lump of wood"; it has been difficult
to find pickups I like for my very dark and nasal sounding 335 knockoff.
I'm currently using SD Jazz with series/single/parallel switching to
give a choice between bright hum and stratty.
<g> I've got too many guitars to hate them all a once, and if I do
develop a grudge against one I just swap the pickups and all is well
again. IMO one way to find a guitar you like is to
1) get one you think you like
2) get an amp that really suits it
3) keep swapping pickups until you *really* hit the spot. I've got a
whole drawer full of discarded pickups, coils, magnets and ferromagnetic
mounting plates.
But I'm as much a tinkerer as I am a player.
I'm just blogging because it is a cold damp Sunday arvo, and the film on
TV isn't much chop.