Healers, then and now:

[Silver-Strider]

Choice

I just try and find old videos of those days. Plenty still floating around on Youtube (mostly Mr. Happy but better than nothing).
Aero 1/2/3 all did exist together back in Heavensward. However, Aero 1 only dealt a total of 200 potency in comparison to Stone 3's 210 potency, meaning it wasn't worth keeping up in terms of rotation as Stone 3 outdid it in terms of damage. However, Aero 1 was still valuable as it granted movement and weaving windows as it was still an instant cast ability, which is something that WHM lacked outside of Regen and while good Regen uptime was important back then, if a Regen was already on the tank, Aero 1 was still a viable option.