That was my suggestion too, but I prefer snowflake's idea because it does exactly the same thing with the added benefit of simplifying the wallet. Instead of slow power-up it can just be STEEM that matures after 7 days to offer influence. It is of course liquid at all times, so you can transfer it immediately etc.

So don't need a second Steem Power component that needs powering up or down, even if it's instant. Just have STEEM - gains influence after 7 days.