If Korg and others are stopping their production of rack tuners, then I'm sure they have a good reason based on market trends because I would think that rack riggers still need to tune their instruments.
I did not want to string a pocket-sized or stomp box tuner to my rack, same with a compressor (if not a rack version.)
I, too, had the same questions at one time and I ended up with an all-in-one solution for my main rig.
I am not suggesting that you consider re-inventing your wheel, but I would like to show you what I am using these days, and if you continue reading through the thread, I talk of tuner + compressor topics that factored into my decision.
Behringer Bass V-AMP Pro
Good luck!
P.S. To perhaps spare you the long thread, the rack mounted unit I am using contains both a built-in tuner + compressor among other things.