I'm glad this is most likely to be implemented.
A couple of ideas that come to mind but I'm unsure how good they would be without detailed discussion with others.
1) Increase the early bump time, so you can bump ever couple hours, however the more you bump, the more it costs. Eg: first bump: 250SG, second: 500SG, third 1000SG etc, then it resets at some point.
2) Allow traditional 8 hour comment bumping, but due to the fact most people will use traditional bumping with their autobumpers to spam reply count, somehow make it so autobumping posts do not accumulate sythe gold as it's practically "gold farming" sythe gold.