There are already a fair number of people that think high-level play is not for them, even some that've never actually played at high level - they just remember prior editions they played breaking down and never being capable of reaching high-levels, so they no longer desire to try them.
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Now we're definitely into never gonna happen territory... ;-)It'd be nice for sure, especially if it's in a different setting than the Forgotten Realms.
I plan to run OotA as a level 15-20 adventure. If it ends up not being a total debacle in the first session I'll write up my notes as we go.![]()
And to clarify this is after the PCs have completed the ToD campaign - so they will have history.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.