What is the future of these projects? And how reasonable is the investment?
It depends on individual project but know that many new projects are doomed to fail. Assuming you stake an altcoin, you earn certain amoun of profit that is calculated based on the percentage of the total amount you stage, if the profit earned from stake is not up to the amount of money list in the value of the coin as its price decrease, definitely that is a loss. Altcoins are ridky. But if the coin increase in value or if the coin is a stable coin that it's price assumes the price of fiat, you can make profit from staking. But there are altcoins that are stacked and its value decreased which make staking not to be profitable.