5% fees look to me high.

It should be cheaper.

To become printing on demand, the fee should be optional. Like 5% fee for instant and 0 for 3,5% days ( or longer).

So pools can play out pumpers with 0% ( can be also 0,3%) and bring the price to 1$ and not close to 1$.

we will only become a stable 1$ coin if it becomes an automatic thing.

With the same mechanic that the stabilizer proposal does. With the difference, the profit will payed out as ROI. The scale would world in an unlimited way. But fees can kill the fun.

Also, increasing trading liquidity for HBD will discourage such attacks, because of the higher risk entailed to start a pump. But that's more of a long term thing to accomplish.

Long term I think a replacement with a DAI version / less complex would work better.