Hardcore crafters, SE has rewarded you big-time in this patch.

[Seyb]

Now you're telling me I should get everything to level 60 for the materia, too, something that also wasn't necessary up until this point (and shouldn't be, if the developers original statements were to hold true).

http://ffxiv.ariyala.com/TBZ4
In my build you need:
4x CP IV
2x Control IV
RNG dependent amount of III materia

You say you have 3 crafters at 60:
3x level 58 quest: 3x IV materia of your choice
3x level 60 quest: 3x IV materia of each type

So you already get the small amount of IVs that you need through those crafting quests. Control III can get expensive, but it's manageable.
Anyway, crafting has always been and will always be: put money in and get money back.

We could argue all day. But in the end, it's not S-E's fault if we weren't prepared for 3.2.

And again: No. You did not make the "wrong" decision by going the 180 route until patch 3.2, as I have proven again and again with the above build.