Nice one @jlordc
I've not read the manga for Shingeki no Kyojin buh v been watching the anime.
The concept from ur post implies that there's only one unique holder for each of the nine titan forms. Is that how it is? Can't there be more than one holder for a titan form?
Yes, that is correct for the "Nine Titan" classification. There can only be one unique holder for each titan form.
If a titan is devoured by another titan, then they gain possession of that titan's powers. :)
Wow! Nice.
What if any of the Nine Titans die a natural death? Do we know what happens to the powers?