A design that requires you to keep a computer tethered to the printer at all times via USB is a serious flaw but not necessarily a dealbreaker.
Loading files onto an SD card that you plug into the printer is also okay. Ample connectivity options: Ideally, you should be able to start a print over Wi-Fi or transfer the file over a USB cable.
The bed should also level itself or be simple to level manually, since a sloping print bed can cause printing errors. Easy-to-use hardware: Even a complete beginner should be able to put the printer together, load filament, start a print, and remove the finished model from the print bed.
