I don't fundamentally have an issue with a parking garage fronting the street. To me it's all about the ground level. That to me is an easy place to make retail work, especially given the added employees downtown here and at Florida Blue. The area around the building does look suburban, but I haven't seen a good rendering of the street frontage to judge yet.
It's interesting about the employee shift downtown. FIS right now is in the Black Knight Building and the Prudential Building on the Southbank, as well as one other building in town; I think somewhere on the southside. Assuming they all move here, then that frees up space for Black Knight, so the Black Knight employees in the Florida Blue tower move over, so I'm guessing that building would then be full (I don't see space for lease there). With the new parking garage, Florida Blue then backfills the space vacated by Black Knight moving out.
I think the only space that will truly be vacant and for lease Downtown will be in the Prudential building.