From my understanding through exposure to this environment, I feel that altcoins must have a large and well-experienced development team and community in the crypto space. This development team needs to have a high-quality, experienced team that can deploy initial and ongoing launch scenarios. Altcoin projects should have advanced technology and need to be scalable to meet the needs of users. Altcoins need to have flexibility to allow for improvement and change as needed. A reliable altcoin must have a good security architecture and well-designed security mechanisms to ensure the safety of users' transactions. Altcoins need to have active exchanges and work on major cryptocurrency exchanges to ensure liquidity. Altcoins should have a transparent, open and fair financial policy to ensure that the value of altcoins is supported and protected. Ultimately, altcoins need to have user interest and support from the crypto community.