Modern stadium with a nod to the OB, something like they did with Yankee stadium which is a freakin cathedral, with the old stadium facing on it and monument park in centerfield. Incorporate the Ring of Honor, Smoke entrance, etc. but the stadium should stand on its own, not a duplicate of the OB.
Also I hate to say it, but incorporate some room between the seats and aisles......I think COVID is here to stay for awhile, and if your gonna build a stadium, might as well take this fact of life into account, It will jack up construction costs and lower capacity, but given the limitations on live entertainment, fans would be inclined to pay more for a live event than before COVID where you can stuff fans into a stadium like sardines....plus they'd get more seat and leg room. Lower capacity by 25% and raise ticket prices by 25%. Sucks but I fear this is the new normal and we might as well get ahead of it.