The more I play around with my content, the more I think about adjusting the tiers, and how to do them properly, so what I'm thinking of doing is getting rid of the 5$ tier, moving the 15 to 10 and the 25 to 20, and then setting up a "supporter" type tier which is higher but completely is to be a more supportive and interactive role with myself.
Overall it cheapens the price of the 2 higher tiers, and gets rid of the base tier and if someone really wants to interact a lot more and be a more purely supportive role they can.
These aren't put into effect yet, so feel free to chime in your thoughts.