@mattonux I still contend that you haven't done much to answer the question of why you think it's okay to not pay someone with actual money for the work that you're asking them to do.
I've said it before, and I'll say it again-- you get what you pay for in this industry. While there may be some people willing to take on this kind of project on spec, you won't get nearly the results you would if you took the time and money to hire a professional designer or agency.
If what you need to get additional funding is just a pitch deck, then come up with the funding to pay a professional to help with you that piece. If your idea is truly as good as you contend, I would think it wouldn't be hard to get an interested party to front a few hundred dollars (at minimum) for branding and logo development. Small business loans are available in abundance as well. I'm sure that you and your business partners may be able to come up with a modest sum out-of-pocket to pay a designer.
The kind of arrangement you're proposing doesn't help anyone. Your new "partner" only ends up with a modest amount of experience for a project that's more likely than not to fail. You end up with what are likely to be sub-par logos, graphics and pitch decks, which will have to be re-done by another, more experienced designer at a near-future date should you ever manage to secure funding-- a likelihood decreased by the quality of your logos, graphics, and pitch decks. From a business perspective, it doesn't make much sense to pay twice for work that should only be done once. I'm sure you'd agree with that.
That's not to mention that whoever ends up doing this work for free (assuming the idea fails, which, as we've talked about already, is more than likely) is only furthering the myth that it's okay to not pay design professionals for the work they produce, thereby bringing down overall wages and hurting the industry as a whole.
I know this sounds a little harsh, and maybe it is. Please know that I'm writing this as much for your benefit as for the other users here. If you want to give your product the best chance to succeed, do not scrimp on branding and design. Find that budget, vet and hire a professional, and cotinue forward with your plan. That's the best method to give your product a chance of success at this juncture.