really really hoping the macbook 16" has 4 TB ports. totally don't expect it too though.
Leaks of the chassis from the manufacturer already confirm it will be 3 TB/USB ports, HDMI and MagSafe.
Does a beefy dock like 80-90w, have enough "power" where i could route all items thru a dock and have the dock be the single TB device on the macbook itself?
Well M1 should draw a fair bit less power than Intel, but I also expect Apple to ship a power brick with less than the current ~90 watts found on the 16" Intel models.
Many docks offer power pass-thru so you could connect them to a third-party higher wattage power supply and have more than enough juice to power the MacBook Pro as well as most peripherals you would connect to (and draw power from) the dock.