I know this is more of a problem of preference, but the new card system is really not that bad.
The main thing I liked about the card system was the support it gave my party, the one thing I hated was fishing for the only optimal combo, balance + AoE.

This new system keeps that sense of buffing and supporting your party and knocks out the annoyance of drawings dozens of useless cards. I can sit here and pretend I used Bole or Arrow on DPS, but that would be a lie, Balance was all that mattered, everything else was just me compromising between worse buffs or no buffs at all.

Aside from all of this, I'm sure this new system is a lot easier to balance between the healers, which is always a good thing.