San Antonio’s Lake Flato Architects and Houston’s Studio Red have completed what they’re calling a schematic design for the new 59,000-sq.-ft. Midtown arts center planned for the full city block at 3400 Main St., adjacent to the Ensemble/HCC light-rail stop. And that means: Yes, presentations to the board of the Independent Arts Collaborative, but also the follow-on posting of the design on the organization’s Facebook page — to see what further reactions come in. The latest plans elaborate on the design team’s concept of separate spaces connected by an open-air central breezeway (the tall structure at right in the above image, viewed from the corner of Main and Holman), but make clear that the theaters are the project’s focus.