Astro changes 5.1

[Shurrikhan]

I can’t speak on KB+M users, as I have always played this game on controller, but I always thought that they would have the benefit of mouse-over macros for this.

Hardly, because of the lost queuing functionality. You'd be at least as well off just clicking on your next target mid-cast, queuing the skill on that target, and then clicking the next. I've done both, but mouseover functionality at best comes out even.

How can you say that’s not an inherent flaw in the [Card] system?

Easily. Because it's not unique. The same massive disparity between ease of play between K&MB and Controller exists for almost every aspect of healing. It's just more pronounced because you're having to spot-cast, which is mostly (an oddly) absent from most XIV healer gameplay.

Make no mistake, I've been pushing for revised controller functionality since ARR. Taking up a healer in 8-man content is largely what made me stop bothering with a controller altogether. But, that's a game-wide issue, not one unique to Cards.