> an upgrade for people using a lot of keyboard shortcuts.
You are suffering from Stockholm syndrome. The keyboard commands should be thought of as the primary interface and the slow mouse actions are for beginners or when the slow mouse metaphor is more natural (e.g. grab and drag a screen element). Shoehorning keyboard commands into a menu metaphor has been a cancer computer design for over 40 years.
Although for $200 I recommend first considering what keys you'd prefer at what location and how you'd change the layout if you could choose freely, a lot of keyboards and kits are fully programmable and come with wildly different designs. For example, multiple thumb keys are pretty much the most comfortable modifier keys you'll ever use.