With dropdowns only being able to be formatted as text/number this often necessitates the creation of extra formulas, automations or data shuttles, just to get the data back into the original format. It would be incredible to be able to use a dynamic dropdown of contacts or dates directly. With the future introduction of contingent based dropdowns, selection in one cell drives the drop down list of the next. Being able to select a department then have a list of contacts from that department without having to go through multiple other steps to one: get the contacts into the dropdown, then two: get the contact back into the contact form for use in automations, will be needed to fully utilize the new features in Table View.
But even now, being able to have dropdowns that are more than just Text/Number would be a huge step forward.