Don't worry... steem-power going up according to your holdings is baked into the back-end of steem. Has nothing to do with steemit front-end. Steem however stays steady, no matter if you login or not. That's normal. Nobody has promised anything different.

Bad things will come however when the payment structure is drastically changed, while investors invested in steem based on suddenly obsolete rules. Trust will drift away from steemit this way. So its importing in my opinion that Steemit doesn't change too much in too short time. Changes are good! But with respect to the reward system, move gradually. Maybe from 40 votes per day to 20 votes per day in 2 steps in half a year time for example. Steemit payout system is VERY slow (2 years), so changes to the payout structure should be slow also respectively. You need to respect investors, and give them a change to make the right decisions on the true facts.