My understanding is all of the current security setups are very temporary, with the idea of refining the design and procedure before it's all made permanent. I'd hope they're aiming to install x-ray machines like Universal did to expedite the process of screening, and that requires new permanent structures. That's why EPCOT and MK/TTC are still using tents and mobile barricades after more than a year of the enhanced screening procedures. I know for MK/TTC and EPCOT, complete remodels of the entrance areas have also been in the works for years, they're just delayed with the redesign of the security areas.