In the Death Busters arc the bad guys were gathering hostes to supply to Pharaoh 90, then in the Stars arc Galaxia is actively collecting star seeds. It seems to me hostes and star seeds have a lot in common, in that they are a person's core, their soul, and have a lot of potential power, especially for senshi. Also, it seems when a hoste or star seed is removed there's usually severe consequences for its owner. Chibi-Usa was medically dead after Mistress 9 ripped away her hoste/crystal, and we know that a sailor crystal is also a star seed. Since Pharaoh 90 is a fragment of Chaos, it's possible then that they were after the same thing, just using different terminology.
What do you guys think?
(I'm stuck in an airport and my flight has been delayed for three hours, so to pass the time my brain started punting this question around...Apologies if this has been discussed in the past.)