What can we do to increase the Steem price? do we have any control over price? Would it be better to covert all SBD, or increase Steem supply?

I wish I knew. I'm not sure there's anything that can be done, directly. In another comment, @moecki mentioned the idea of removing the SPS wallet from the debt calculation. That might be worth considering. Another possibility is to support the "Reduced Inflation Proposal #21" proposal, which would start burning 1000 SBDs per day if it were to get funded. At today's prices, that's about 6400 STEEM. Not a huge amount, but it's something.