Based on what it has been seen among the wide array of altcoins such as development, innovation, and security issues, what altcoins might survive in the future?
In my opinion, I think that the only ones prone to survive would be good old altcoins such as Litecoin and Dogecoin, but I may be wrong.
Nevertheless, I would like to know your opinion about this as well as any altcoin that might be worth holding onto for the long term.

I think only stable coins will survive in the future. Stablecoins are the basis of financial instruments for hedging and derivatives that will be necessary for this wild-west industry to cross the chasm to safe and more easily used financial products. Maker DAO, VariabL, and Basecoin are attempting this from the startup eco-system, but I think this is a great space for an enterprise banking incumbent to provide value, liquidity, and validity to the digital asset ecosystem.