Plenty of so called Café mods is one way to abuse a from the beginning very good looking bike. Just check which bike that will be sold for most money. A Café molested bike or a clean stock CB750 or very close to stock? Which Sandcast will cost most? K1-K2 going into that direction too...
Modify your own bike is a fun hobby but today is the wind blowing back to stock so all of us that had fun for decades ago modifying our bikes do it again, now back to stock or close to it undoing the earlier work.
It is fantastic that so many parts are available and are reproduced, more is coming. I'm sure this forum has helped that to happen.
Check the market for restored or NOS gauges, K0,K1, K2 cost some $$$
Drilling holes in parts is not nice design. Why follow a guy that modify the bike by making it worse? Next is triangular wheels? My worst riding experience on my bike is the horrible clubman bar. 6" longer fork tubes with a higher bar and "banana" seat much better"

Different if building the bike from the beginning from a scrapped bike with parts or close to it, saving it from the grave.
The good thing during the CB750 era are all parts that can replace stock, bolt off-bolt on possible to return to how it once was.