I love that you guys just added a lot of defensives to be able to be to tracked on the buff bar. We are still missing a few important buffs, but you are on the right track.
I would like to suggest that you add the option to make the buff bar grow instead of having static positions. Currently, if I put 20 buffs on that bar, it stretches across half of my screen. However, at any given moment, probably only 5 of those buffs would actually be active. So, if instead of having static positions, the buffs could start at the center and then expand outward as they become active (in the order that they are configured).