Ok with any solution which puts everyone on equal terms.
Either automate the default client to an extent when the game becomes ProgressQuest.
Or just put in some effort to detect and punish the bots.
And yes, I am botting in all MMO games where it is technically possible and economically reasonable. Partially including Haven. I'm just too lazy to write a well-working bot.
Btw, it IS possible to allow people contribute into vanilla client, be able to test it and at the same time be unable to play it on the main world until their features are approved and integrated into vanilla client. Think about test server and closed proprietary client-server protocol and auth module.