What do any potential "collaborator" (and I put that in quotes because you said yourself that they're taking the workload off of you) stand to gain? It might be super easy to ask for other people to take the workload off you with no compensation but you as an animator of all people should be aware of the gigantic amount of work involved in the making of a motion comic. I checked your audition page and, while you already have some applicants, you're asking for professional-level artists with no reward in sight... and you're not even showing what you are capable to do, in order for applicants to know if working with you is worthwile.
I mean, good luck with that ;;;