How high can you push the maximum dexterity of a Heavy-category armor [For the purposes of this exercise, let's say Full Plate], without reducing its category? (No Mithril, ripped Celestial Plate, etc)
From what I can tell, it's:
+1 (Full plate)
+2 (Entropium)
+1 (Of Nimbleness)
for a total of +4.
Did I miss something, or is it really, really hard to boost max dex? Is there something in 3rd party that would make this easier?