I went away for 2 weeks and I'm in awe to see all the updates I missed. I cannot express how beautiful and professional these updates look. You even managed to do modern office revamp with all the natural museum stuff. You are just awesome!
PS. I believe a lot of us will be sad when the interior tileset pack will be finished so maybe while doing the outer sprites you will be able to add a few sprites to this pack for example every 2 weeks or so...