Wireless display is improving anyway, in a few years such technology could be supported on many tv's with very little lag. A Switch lite would simply have a chipset that could broadcast its display. In the same way as wii u to its gamepad, short range high bandwidth. At worst you'd have a little box that plugged into a hdmi port that could be an optional purchase.
So many possibilities for revisions with the Switch. No doubt a 1080p screen version will come about at some point that offers docked performance while portable and I'm hoping for a Switch that slides into a VR visor for VR games maybe based on a future generation of Tegra that remains compatible with the original Switch.
I personally do consider the Switch currently too large with poor battery runtime. I feel the size and runtime was dictated by the current chipset. The current Switch is almost a prototype design being based on a off the shelf chipset with no customisation. I'm sure just like previous designs there is a properly customised design coming soon that makes optimal use of the silicon space.. Currently 4 of the CPU's are completely disabled on Switch which is wasted space in the silicon. They could use that space to put in circuitry currently on seperate chips, wifi processing etc. I'm sure the next revision will be using a cooler running later fabrication process, 14nm/16nm or better. A fanless design seems likely especially if they don't reduce the Switch size.
