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.

Litecoin has been very useful for people trying to get rid of the congestion in the Bitcoin network, but I'm not sure if it will have a good future when Bitcoin receives the benefits of Lightning Network, and when a large number of people start using SegWit addresses.
Regarding Dogecoin, I don't really know why still has value. I speculate its marketcap will probably be much lower in the future.