Personally some big factors investors look for to assure a coins trustworthyness:
An experienced team: It needs to be public who is running the show, and also who the developers are. Are they senior devs with a trackrecord of their work (either in form of clients, products, or github)? If the team is just two dudes with business degrees and an idea, no one is going to take you seriously.
A unique new concept: Are you adding something new, or are you just creating a carbon copy of something that is already out there to raise a ton of money for your next lambo?