If you remove the melee/ranged aspect, then it literally doesn't matter who you give the cards to.
Instead of changing one choice for a different choice, you've removed all choice.
That's even worse than what we have now, even by your standards.
So yeah, if you remove half the choices you cut your choices in half, that's not a revelation.

That's literally overdramatising though.
"I don't like having to choose between A and B instead of choosing between 1 and 2, so may as well have no choices at all!"

And 'it feels bad when you have two ranged or two melee'?
So what? It felt bad drawing an Arrow if you had a Bard, Ninja and/or Monk.
It felt bad drawing Spire after Spire at all times.

It's just different choices. You get the card you don't want, use one of your MANY redraws.
And in the end, if you have to use a Balance on a Bard, so what? That's still 3%, about as useful as using an old Arrow on a Bard.
Although technically it's more effective to use your melee cards on the Tank.

It's literally all just flavour. It might feel worse because it's not what you've been used to, but it's just different targets for different cards.


Intersection isn't potent enough?
Then maybe POTENCIES need to change, you know, the thing they can and do regularly change.
AST suffers with MP more than other healers? LOWER ITS MP COSTS, or I dunno, reduce the cooldown on Lightspeed.
There are so many better options than 'give me back an rng MP card that I might draw once every 3 or 4 minutes if I don't use it for the AoE buff'.