Why you will investment any altcoin due to make profit during bull season?? Why should you need to pick up any just launched new altcoin when you have better option to pick up good coin? Thus you can also enjoy bull session as those will also pump. As you already mentioned, coins that can't manage their standard, will get delisted? Then try to pick up those coins what will afford to manage their standard in future
And how do you determine if a project is good or not? What are the things one should consider before going in? It's a very difficult skill to master, to be honest. People might think it's easy to identify good projects and make investments with them, but it's actually not, because sometimes even the projects that look 100% legit, turn out to be scams later on, so you never really know unless you have a lot of experience in the industry.
So it's basically not a good thing for someone who is relatively new in the industry to go out hunting for good projects, one might be able to identify one or two if they do a lot of research and analysis, but to have the eye of an eagle in this market, having knowledge and experience is very much important.