A good partnership really helps us to identify that this project has potential, Otherwise they certainly won't partner with it. Remember potential partnerships, not bad partnership.
The roadmap also helps us to know whether their performance is in line with their target or not. some of the achievements in the roadmap also help to know what they will do in the future.
These two things are very important to me in investing, because there are many projects that don't have potential partnerships and a good roadmap end up being Shitcoin.