I am interested in such coins as nwc, cdt and mana, what do you think of these projects? Should you buy these coins?
Most of the coins that are listed in small exchanges are not safe, why? because their listing fee is cheap, therefore the scammers can afford to get their project listed. Small exchanges have not built a good reputation yet, so most probably they don't conduct a thorough investigation before listing a coin as they could always tell us that they don't dictate the price movements of a certain coin.
Although I'm not saying buying coins in small exchanges is bad, just always remember that the risk is high on non-reputable exchanges, but if you are lucky to buy a gem, it will certainly give you a decent profit.
To try to invest in new coins but at the same to want this to be safe makes no sense, investing in new coins is risky as hell in this market, sending your money to new exchanges is incredibly risky as well, and sooner or later someone doing this will be scammed, however can you overcome those risks with your trading skills? If you can then it may still be worth it, but if it is not the case then most likely the losses that you could suffer will be massive.