This is a large part of my daily life. It governs how well I'm able to interface with a computer. When I type on a good keyboard, my thoughts are able to flow into the computer at a speed that is frankly frightening. This specific one I've sketched is the REALFORCE keyboard I have at home. It's a breeze to use.
One thing I disklike about it is the key layout. I would prefer ortholinear, but the retro style of it is undeniable.
The key actuators (sketched below) are a kind of hybrid of mechanical and dome designs. Internally there's a dome actuator that provides the bridge for the connection.