One problem can't solve from first, if new investor can't trust new fresh coin why they don't invest in old coin. We several good coin already exists in cryptocurrency even with very low price. Even I don't think there could be a trust problem. All solution is now is the correction time!!
Dont you look at Bitcoin itself? it has $152,448,348,835 marketcap. it means that investors invest in old coin
that also happens in others old coins, such as Ethereum, Ripple, Litecoin, Binance Coin, and the others
Both old and new coin have their own advantage and disadvantage. it just coin preference for investors
I think both is good as long as having good strategy to do with them.