Thread:Silver-Haired Seireitou/@comment-26193148-20160730132830/@comment-2089817-20160730161355

Hmmmm... This is definitely a concept that has been played with and considered many times, though nobody until you guys ever really officially created said concept. Ginjo claimed that Fullbrings do not evolve but simply change into the form they are meant to become over time, becoming "perfect". Supposedly, the members of Xcution all had perfected Fullbrings. But as we saw, when receiving Ichigo's power, their Fullbring changed into something much stronger and relatively different. Since the key component that distinguishes Fullbring is indeed Hollow reiryoku, it stands to reason that gaining enough Hollow power is enough to further evolve one's Fullbring.

The article itself does a good job of explaining and justifying this, but the only thing I would say I'm iffy about is the soul suicide aspect. Now, this is based on my interpretation, since Kubo only gave us a brief rundown, but from what I understand, soul suicide really only presents when foreign power is inserted into a soul, toppling its internal balance. Which is precisely why it is a threat to pure-blood Quincy, because they have no "antibodies" against Hollows, as Kubo says. But the core concept of an antibody is a weakened strain of the foreign entity that helps the body develop a tolerance and protection against the actual entity, so if you already have traces of said entity, there isn't really a need to develop more antibodies, theoretically speaking that is. A resistance to its damaging essence already exists. After all, once you have Hollow power as a part of your soul, why would more Hollow power lead to Soul Suicide? My suggestion would be to change Soul Suicide into downright Hollowfication. Too much Hollow power and they would Hollowfy. Since humans are obviously weaker beings than Shinigami, I doubt their souls can handle pure Hollowfication, and most of them would die as a result (which I guess does eventually become Soul Suicide, just with extra steps) or simply transform into mindless Hollows, except for those few remarkable subjects. But that's just my take on it, and doesn't necessarily constitute fact, so take that with a grain of salt.

As for abilities, I would say that Fullbringers would gain an increase in their abilities that reflect Arrancars perhaps. Their Bringer Light, instead of a smooth swirling energy that manifests around them, it would become instantaneous and rigid like lightning, accelerating them into a high-speed movement like Sonido. The key aspect that I attribute to Arrancars and the difference between their abilities and other abilities from, say, a Shinigami or human, is that they are significantly more aggressive and rough. So as I said above, Bringer Light would manifest in a more aggressive manner, like fierce crackling lightning rather than a shimmering soft light. And there's a lot of possibilities there, you could even give them a unique form of Cero that looks like lightning bolt rather than a beam.

The other power worth considering is, as Bleach Wiki listed it on their Hollow page, Soul-Body Separation. Forcibly extracting a living spirit from a victim's body, in the normal case. Fullbringers can already pull on the soul of matter, right? When you enhance that existing ability by adding "extraction" to that power, there's a lot of possibilities. For instance, extracting the "soul" of... fire. Taking that raw energy and adding it to your own supply. Extracting the "soul" of plants to heal injuries. I don't really have a lot on the top of my head at the moment, but you get the idea.

Anyways, I hope that helps in some way.