Minexcoin with very low trade volume would resist serious investors.
Agree, but interest rates of Minexbank allow the trade volume to be changed quickly and easily. It is not yet a time to increase trade volume. Besides for the health of any crypto coin it is better to have plenty of small investors then a few of big ones.
The problem I can see with those small trade volumes that the coin price can be easily manipulated. How that fact impacts the 'health' you mentioned?