I think that one should do quite a comprehensive study before investing as there are so many good projects and not so much money. My advice is that you should invest in coins that are listed on great exchanges, as they do quite a bit of research before signing a coin.
I think your suggestion is very reasonable and good. but further analysis is also needed for coins that are already listed on the exchange. because remembering the tragedy that befell Terra Luna. but still it is much safer on coins that are already listed on the exchange. rather than new projects that keep popping up every day. and very difficult to find a project that is really serious about the project. because most of them are just to cheat. ie they leave the project abandoned and do not meet the roadmap or what is written in the whitepaper.