I will invest in old projects that have a working dev team because they've been around long enough to release the product. Now I see high growth rates on older projects and my task is to find similar projects to buy into. It is still not too late to act. Be patient to find the sweet fruit that will come to you.
Old projects are no longer interesting to anyone. now there are a lot of new teams that are doing truly innovative developments in the cryptocurrecy world . I don't think old altcoins are a good idea