I haven't used USB-A in several years. It's a legacy port and not needed by most people, and the number of people still needing it goes down every month. USB-C is the standard now used for USB sticks and for power. Bluetooth is used for external keyboards and mice.
It's reasonable to ditch it.
I agree that HDMI should be built in. Just one. Just for the scenario I said previously - for a brief presentation in school or at work. If you're going to also be plugged into power at the same time, you should have a combo dongle that includes both HDMI and Power (and USB-A... that's the dongle currently plugged into my Mac. The Power and HDMI are both used. The USB-A port is there but I've never touched it.)