Having built several bluesbreaker type pedals, I was underwhelmed by the blue side of this. The green side is nice though, but I never use it because it's stuck in a dual pedal.
never noticed that issue with tayda branded pots, but I usually stick to the alpha anyway because I figure they must cut something to make them that much cheaper.
Also, the google query
site:pedalpcb.com filetype:pdf tl071
will bring up some of the build docs that have tl071 in them. Looks like one of the top hits (Celsius) is a 1-knob w/ a tl071, as is the Triangulum (both of these also have a chargepump too).