I think you might be overestimating how much people care about this as @taskmaster4450 was alluding to. I don't think the inflation of Steem is a big deterrent for investors and more importantly...USERS
Which brings me to my main point. I don't think we should be trying to tinker with the economics to attract investors. We should be looking at the applications built on Steem and working towards making them fully featured products that people want to use and CAN use without taking an online class first.
Steemit/Busy/Steempeak/Esteem/Steeve/etc are blogging platforms with a cryptocurrency reward system integrated. How can we make those the best at that, so that we can increase users and traffic --> Which will THEN be the metric which will get investors interested.
I don't think anyone on the outside of this system cares much about this at all. But I'm just speculating too so who knows. The lowest hanging fruit is, make these apps easy to use, fully featured things that are solving problems and creating value for regular people. That IMO is what will attract investors.