First off, assuming that the card rework would come with the extra bells and whistle that were not asked for is ridiculous. You don't get a hot fudge sundae with your burger if you don't order it. Why would Squenix go out of their way to give us things we did not claim to want?
Secondly, no one has been able to put forth any cards that make sense other than all dps cards. The utility cards are silly. The healing cards are bloat. The way the combat works in FFXIV is burst windows every 2 minutes with mini burst every 1 minute. So dps cards worked the best with the way combat works in this game. Unless Squenix changes the flow of combat so we are not bound to the 2 minute window, any other iteration of cards will be pointless at best, useless at worst. And the current ones are pretty useless.
I'm not really sure what card effects you think they could give that wouldn't be terrible other than buffing the dps. I will go so far as to list ones I've seen.
Healing: bloat, we have so many tools
Mitigation: pretty unnecessary currently, completely useless once people have gear
Heal pot increase: we have synestry if we need it, otherwise it is for scholar spreadlo and we may or may not have a SCH co healer and may or may not have the card available when they need it
Move speed: but why? We have sprint plus nearly every job has some form of movement capabilities now.
Mana regen: lucid dreaming, super-ethers (1.8k mana potion), plus each healer has their own kit for managing mana. If you are still oom after using all of this, you are playing wrong
Haste: If you want to piss your dps off, sure. It will drift their abilities so it no longer lines up with the 2 minute window.
So I ask again, what other buffing effect is available that actually provides aid to your party 100% of the time? I guess if the cards became another way for us to dps, but then we aren't really a support healer the way we are touted to be.