You think just for comments, or your own posts as well?

I think we should set limits based on your steem power. for example if you have up to 10k steem power you can no longer up-vote your own comments or posts or atleast put a daily limit. If we remove up-voting yourself completely then the ones who would get hurt would be the minnows and dolphins. Not the whales.

"THen it truly becomes the pyramid scheme a lot of people make it up to be"

No, the opposite is true. I was going to write a post about it.
If you have to put money in (by paying for Steem Power), but this money can only go to those already here (because you have to grow your user base before you really start earning money) you end up with a hierarchy similar to that of a pyramid scheme.

One of things stopping it being a pyramid scheme is that you can upvote yourself if you want to - you have some say where the money goes.

Now, it may be argued that money does go to 'lower value' members, which is true, but the majority goes to those who have been here longer, and the more the invested the more successful they are likely to be.

I agree with this comment the most.  If this function is taken away in the next HF then it is not a moral issue anymore.   And when the greedy ones find the next loophole, we will deal with it then.  Steemit is still in beta stage and it is awesome already.  It will take time to evolve.  Look at the difference between Facebook 1.0 compared to now.