I agree with you in that we need to act as a community, also with our votes. Self voting in itself I do not find an issue, but needs to be in balance. You seem to have this in balance with a maximum of 1/3 for yourself. I generally upvote my own posts with 100%, and post 1 to 3 times a day. I generally do not upvote my own comments, that leaves me 70-90% of my vote power for the community.
In the end we can only survive as a community when we share what we have, and we have vote power that we can share. The more we share, the more the individuals in our community can feel that we are a community and when we are a real community, then we will share more, I hope. We all shall be in it for the long term, since when only thinking short term, our community will fall apart and with that Steem will be de-valued in which we all loose.
The other day I was doing a calcultation. If I would buy and power up for 100k US$ worth of Steem / Steem Power and I'll vote every day 10x, every day starting with 100% vote power int he bucket, I would make about 60% return on annual bases, ie my 100k$ would become 160k$ provided that the value of Steem at the exchanges would keep the same value. That gave me a clear answer why self voting is not really profitable. Ok, yes, 60% annual return sounds a lot, but when crypto currencies can double on a daily bases, and Steem went up from around 6ct to 1,65$ within half a year, 60% return is nothing. So better to create a fantastic and great community and with that help Steem price to go up with another factor of 10, than start circle jerking and or even worse, self voting only. I assume when enough community members are following us, we will be able to come out very well, all of us.