I worked once for a (non-Indie) game studio and HQ asked us to change our engine from 2D to 3D to accommodate some 3D art(in the middle of production). It impli

I worked once for a (non-Indie) game studio and HQ asked us to change our engine from 2D to 3D to accommodate some 3D art(in the middle of production). It implied a lot of work but the studio had the means to put some very experience people focused just on abstracting that pipeline. This is harder that our case because it involves gameplay, so there were some naiveté from their part but I can see how from an abstract perspective it can be understimated.