Yes, totally, checkout this 3D Material configurator with editable Texture transforms (rotate/offset/scale/flip/etc.). Upload any Texture file on the fly, or even combine different textures (the site currently is under development, so you may get errors while playing with the material editor):
Custom Logo is just a matter of uploading transparent logo as Texture file and not repeating the texture. Or use Babylon Decal.
However, if you try to mix GLTF files from right handed system with Babylon built-in meshes using left handed system, there are issues currently.