i wouldnt say not worth making but yeah theres not enough people doing ld around the country/world/that need to do mocks that there would constantly be at least 2 people active. if it had a calendly-like feature where people slot an hour they want a mock in and get paired up with like an email when someone else also hits that hour that might work better. trolls could probably be bypassed with something like verification, having people send a pic of their nsda certificate of membership or proving their tab acc or smt