100% correct, but by that point, just get a Rat Clone/Variant that has a built in clean blend and/or bass adjusted EQ.
Between the 3 pedals you need to get to that point, you've spent enough $$ to buy one, and used up 3x as much pedal board real estate and power supply outputs to get there.
Candidates-
Broughton Locust Star
IdiotBox Blower Box
Dunwich/Magic Volt Thrower
MXR-85
Fuzzrocious Cat Tail/Rat Tail
Source Audio AfterShock
"Bass adjusted EQ" is not all that worthwhile if its just a different configuration of the Rat's passive LPF. Im not familiar with all the pedals you listed but some of them surely just have the standard Rat tone control that cuts highs but does not boost any low end.
Im talking about setting up a more modern and powerful distortion setup based on the Rat. Not just getting some builder's Rat copy. If any of the ones you listed have an active EQ and a blend though that would be a solid option. If someone already has a loop blender of any sort they could try my idea for under $100 which was the point of the post.
My personal ideal rat for bass actually cuts low frequencies feeding the clipping amplifier to give the already-taxed opamp an easier job and improved definition is the result. Then you can boost bass by up to 15db on the back end for a more powerful final tone.