It's essentially a handheld, quoting Nintendo:
"The main unit of Nintendo Switch is the unit that has the LCD screen, which the two Joy-Con controllers can be attached to and detached from"
"The dock is not the main console unit of Nintendo Switch"
The only use of the dock is TV-out and function as a charging cradle, the dock is basically
This
and this in one
with detachable buttons
The dock is NOT part of the system, it will not provide extra compute power, a shame. How do you feel about this?