In a fantasy game like this, dragons as characters are a must in my opinion, along with kobolds and any other species like them too. Put it on the front page and you'll more than likey attract a wider audience since it seems the amount of content to do with dragons is very lacking and what few there is , is for the most part, incomplete.
The few things that have good dragon content seem to gain a lot love even for what looks like dead projects.
Also it would be an interesting game changer if you could change the "MC" like their species sblings and origin ect.
and a more outlandish feature I think would be cool to have but not at all needed would be for a name option for the MC along with a fantasy name or name generator.
Overall this game would almost certainly become a lot more interesting if it expanded beyond the basic human characters since the bread a butter seems to be that you can do whatever you want in this text based world.
If i'm being frank here, this game has a lot of potential even if you set a couple of basic but interesting story lines or add a couple of them where you could be the one causing chaos (like being a bored dragon that wants to put a kingdom on the verge of collapse) with options and methods in-between for the player.
with a decent world bulding and story writing you could end up with a massive gem depending on how you implement world bulding and story. It could even end up running like greek mythologies and stories with a huge fanstsy rework.