I would like to see any circuits that you design.
I'm building a four-channel linear lab supply heavily inspired by this one:
https://www.eevblog.com/forum/beginners/how-does-blackdog_s-psu-work/ . Basically, I'm taking that design and adding the following features:
1) Digital control
2) Current sinking (but not much, more like 100-500mA)
3) Dual current range (via a switchable shunt)
4) 4 isolated channels
5) graphical display. May be touch control.
6) remote control (probably add this later)
7) very compact, half-rack width

switchable output capacitance. This can be a unique feature, haven't seen this before

.
9) probably two channels will be "beefy" (15V 3A), and two will be will low range (both current and voltage), but more precise and with small output capacitor (like 6V, 600mA).
So far I built 6 and half prototypes of power part, now messing up with software part. Since I'm still evaluating different modules, there is no finished schematic yet (don't want to show discarded designs). Also I don't think I'll be able to implement all the features. Current goal is to finish schematic, make one channel evaluate it, learn from mistakes, and will see. Probably, I'll have to give up on some ideas.