Yes, we need more variety.
And price is a very important factor. Look at Marvel, as of January they will have eliminated pretty much all 2.99 titles and replaced them with 3.99... and it's becoming very frequent to find comics at 4.99 just because they have a couple of extra pages.
The American comics market is a funny one. It was huge and has done nothing but collapse for the last 60+ years into a cottage industry that's dying.
In the 40s, they had a ton of genres. Nothing like what Japan has today, but still they had stuff that's now gone.
In Japan, you can find business comics. Seriously there are comics that only concern being a business man. House wife ones too. Add to that that some veer off into silly si-fi stuff as with Business Commando Yamazaki (for an example), a comic about a business man turned cyborg who trouble shoots for business men in need. They also have food comics that cover baking bread, noodles.. etc. Then there are the game ones. TONS of ones concerning playing Mahjhong or GO or Shogi... there is nothing here like that.
Every comic company that popped up since 1978 that has died since, nearly all of them, all died for the same reasons in the end. Bad pricing and money management. Marvel was saved by Disney. DC saved by Time Warner. But the rest... tick tock.
Marvel and DC don't really give a shit. It's money. As we're seeing now, the merchandizing is the mint for these characters, not the comics.
So they don't give a shit.