Front loading bobbin for me also but bigger. So much easier to take out especially if you still have a quilt on top of the machine and need to reload the bobbin not to mention the better feed of thread. But yes it would be nice to be able to see how much thread is left on the bobbin. I also would not want to do without a knee lift (although I do on most of my machines) if I were buying new along wtih the needle up/down feature and a really good light. I need to find a way to keep my foot pedal in one place. No matter what I use under it, it still wanders around on me. Hmmm, maybe tape it down? You guys all had such great ideas. Think the sewing machine manufacturers are listening/reading?
About the undo button: A couple of Aprils ago, Alex Anderson posted a video showing the "undo" button on her machine. Wow, I thought, how did they come up with this? Turned out it was an April Fool's joke. Bummer!