What if, unashamed and unapologetic dragon isekai. Protag gets blasted into a portal and the nest thing they know they're a big strong dragon. play around with them having to deal with the fact that they have dragon instincts and responses. maybe their previous human perspective lets them talk a dragonslayer out of fighting them
one of my favorite things to see in isekai stuff is when the protagonist's real superpower isn't some cheat skill or Ultimate Mega Stats or whatever, but the fresh perspective their earthly experiences bring. Them being from outside, seperated from the fantasy world's ingrained prejudices and history - a fresh voice, willing to suggest things that seem absurd or impossible to locals who grew up steeped in the world's history and context
Now a lot of time if you want that to matter in changing the world for the better, you gotta give them a seat at the political table somehow. usually that involves them being an OP megahero or whatever. being a big strong dragon kinda does that by default lmao. im thinking here: in a world ravaged by war and tension and hatred between the humanoid races and dragons, a dragon with a human perspective and experiences shows up - free of that cycle of hate, and both in tune enough with the instincts and experiences of dragonkind and with their memories of human life and understanding of mortal society, that they can be a bridge.
also maybe give them some dragon gender stuff to deal with