price instabilty-
Not something that anyone can control

I disagree, having fully investing investors in the market would in turn add additional upward pressure on price of any crypto, expectially when it comes to a promising crypto just like bitshares.

Inadequate holders/investors-
How would you propose to change this? Marketing for sure, right?

Yes, but in another dimension, Where ordinary individuals would be used to spread the word “bitshares” all around the world, and when they bring in “potential investors” on board he/her gets a reward. Ordinary forks usually knows how to compel each other and this can be taken advantage of.

insufficient supporting exchanges-
What exchanges would you like to see it on?

Just my favorite exchange- bitfinex

Disclaimer:
Am not a crypto expert !!, everything i talked about is just my personal opinion . Thank You.