The main thing that bugged me with M'Benga's daughter is that they've basically just retconned how many people understand the way they can use the transporter buffer that was seemingly novel to the TNG folk when they came across Scotty inside of one during Relics. Geordi was all like "what is going on with this transporter" but this season you have Chapel and M'Benga using it as an active stasis system for triage purposes. (Although now that I read what I wrote, that's just like two more people who know it, and using the Klingon war as a way to establish the knowledge is pretty good.)

Just kind of seems like it would either be more widespread of a use-case in medical scenarios or have some kind of super major drawback in addition to storage capacity like general degradation. Then it would make sense that Scotty pulled another miracle and kept himself from degrading for 100 years.