Currently, opening a new map resets the level editor viewports to be either Lit or Wireframe (see SLevelViewport::ResetNewLevelViewFlags).
We'd like to be able to specify the default viewmodes behaviour on a per-project basis so users can tailor them to their specific project (for instance, a 2D game may not want ortho viewports defaulting to wireframe)
Ideally we would be able to turn off the view-mode reset behaviour altogether, by specifying "no default" or similar.
Head over to the existing Questions & Answers thread and let us know what's up.