Agreed the Buxton spot on the list deserves its own write up. I disagree with leaving him off this list.
If we are talking about indispensable for building a champion, this team will not win a championship without Buxton performing at level or an outside asset providing that performance. There isn't an in house asset that gets there until Jenkins. He's the most important cog in that how he goes, this roster goes. That there are obvious concerns and a higher risk of losing him doesn't make him less indispensable.
I get the injury concerns, I really do, but then why would Kirilloff be here ahead of Buxton? Cheaper? OK but that's not nearly as important as being on the field. Would we leave Edwin Diaz off the list for the Mets for missing the year with an injury? Certainly not. Your recent writings about how much performance is still there for Buxton when he plays makes the case that when he's back on the field he's still a game changer. It's not Donaldson in that with Donaldson, the top end is gone and wasn't nearly as good to begin with.
Marco Raya is a delicate flower that has never pitched more than 65 innings in a year. He's young and has promise but if he's an indispensable part of a championship roster within 3 years I'll delightedly eat a hat. 13 and ahead of Varland and even Festa is a stretch. For purposes of this discussion, which is not a prospect ranking, Buxton is miles ahead of him.