Yeah, his only path to success was being able to bring in a continual stream of elite athletes (mostly at WR/CB) because of his celebrity & his own athletic success there, while his assistant coaches did 95% of the heavy lifting, and the fundamental team flaws were able to be compensated for by the dynamic play-making.
There have been successful (for a while) circuses before, but Deion alienated way too many people, had an average group of assistants, and no structure in place to replace what they'd be missing as soon as the 2 dudes their success revolved around were gone.