Raspberry Pi 500+ boasts a high-quality mechanical keyboard with removable keycaps and individually addressable RGB LEDs, an internal M.2 socket pre-fitted with a 256GB Raspberry Pi SSD, and 16GB of RAM.
I don't see a good view of the row of ports, but on my 400 there's quite a bit there between the HAT, USBs, micro SD, etc. My guess is that full HDMI would cause some space issues