According to the Ohio legislature website, the transformational mixed-use bill was reintroduced in the Senate last week: https://www.legislature.ohio.gov/legislation/legislation-summary?id=GA133-SB-39
I'm not sure if there are differences against the version last year, but it still has the 15-story or 350,000 square feet requirement.
Perhaps the large-form Nucleus is not totally off the table if the bill moves forward this year...