Would it be possible to add functionality for either a zero sum system or a fixed cost system? Adding in an option for a max bid and then allowing the bid list to be sorted by total DKP rather than bid amount could work.

Max bid will be in the next version. Zero sum was something I thought about adding. But it's incredibly unlikely anyone would use it since it's one of the least popular methods. So i passed it over in favor of adding more in-demand features.

I really enjoy your addon, well done! My guild will be using a dkp/roll system. Individuals will do a /roll out of 500 (this number can be adjusted) and then add their DKP to the roll so that you end up with a total that is the sum of your roll + your DKP. I have used this system since Vanilla it is simple but effective. It would be amazing if you could integrate a feature for something like this. Thank you for your time!

I will be adding a roll system, hopefully by the weekend, along with other DKP methods.