It'd be nice if we could figure out the correlation between stat caps and weapon dps. I forget exactly where, but I read the stat caps for BRD with Ifrit's bow were a bit lower than MNK, WAR, and DRG. This would be consistent with dps being the deciding factor for stat caps (since Ifrit's bow has lower weapon dps than the 3 aforementioned melee classes) rather than weapon damage.
I know everyone if of the mindset that weapon dps is the most important thing, but if you could triple/quad meld a slightly lower dps weapon, there might be a point at which more Atk (or something) from raw stats makes up for the lower Str/Pty cap.

At the very least, this would help us extrapolate stat caps for future weapons (Gae Bolg and beyond).