We are currently playing around with a few figures and are thinking of implementing a minimum balance required and working on a scale of rewards based on balance+uptime.
We understand running a MantisWeb costs time and money so we want the rewards to be worth the time and costs associated.

We want MantisWeb's to be something that everyone wants to run as that insures a healthy and diverse backbone to the network which our features are based upon.

Very soon we will release a document documenting the rewards and requirements of running a MantisWeb so please stay tuned!