By me~
https://docs.google.com/document/d/1eFc2qQTY9P3ym9fyMNYHC_mIogpt9kNrOdm5n_yj1cs/edit#heading=h.6xjrgcowqrbb
This is a large homebrew that has the primary goal of allowing you to play as actual true dragons in a DnD setting without being unfairly overpowered.
To accomplish this...
A) I've included some guidance on how to better balance high level content
B) I've designed eight dragon-only classes, which are equivalent in power to the existing bard and wizard classes.
C) I've re-introduced a simple mechanic that allows martial characters to function much more effectively in combat; Flat Damage Reduction.
D) I've playtested it and refined it constantly for months
Also it contains a few new feats and spells that are suitable for use by humanoid characters! Complete with my personal guarantee that all of this stuff is at least as well-balanced as basic 5th edition DnD.
Very interesting and extensive work, thank you for sharing!
You're most welcome! Please let me know your thoughts if you have any, because I'm invested in making this the highest quality I possibly can. Dragons are my favourite part of the game and I would love for them to become a bit more commonplace.