There is no perfect coin for now,
are you sure ? what do you think about bitcoin and etherium ? these two cryptos are first to exist in the blockchain , with over ten years of thier existence they already undergoe on many developments and patches . both coins can now be considered perfect .
I am sure that 85% of all coins on the market will die because they do not have a really high-quality product
85% of the coins are legit coins and the rest 15% are unrated coin's . legit coins cant die but some unrated coins can be , because the demand for them are only temporary .