The Blog reported years ago that Hot Dog Hall of Fame was a possibility for the remake of Pleasure Island. But that was prior to Hyperion Wharf being announced, then cancelled and then Disney Springs being announced. With HDHOF coming to competitor Universal, another one at Downtown Disney seems highly unlikely. It's important to note that Hot Dog is a Schussler Creative concept, a company previously only associated in Orlando with Disney (Rainforest Cafe, T-REX Cafe, Yak & Yetti). This seems to be their first venture with Universal!
We know Starbucks is going downstairs in CityWalk where Endangered Species was formerly located. Cigarz is supposedly closing along with TCBY and the candy store. Some of these new venues are going into those spaces, according to sources. (This is an on-going store; stay tuned for updates.)