Thanks for the good news! I really like the concept of slowly declining inflation rate. But you also have to consider that when the inflation rate sinks, you will get less and less for your SP. When your upvote is now worth 1$ and you don't change your SP for 20 years, the following things will happen:

• The interest for all of the years combined will be 150%
• The reward pool will be 1/10th of what it is now

If you add it all up, your upvote will only be worth 0.04$. Quite a difference, right?