The numbers you provided are very helpful. Thank you. It is a good frame of reference to understand the (estimated) influence associated with a particular sized investment.

The point you brought up is a really good one too, in that one should not expect to have much influence with a small amount of SP, based on the total vested amount across all users, and the size of the reward pool.

I do think that makes the case for my suggestion though, in that users need more reasons besides "influence" (and price speculation) to power up a small to medium sized amount of SP. If $500 worth of SP buys you so little influence, then why not keep the 500 bucks instead of powering it up?