Fender Tone Master Twin Reverb Amp

As a new dawn rises on "vintage remodels of vintage amps", why won't they include an effects loop? I love and use a pedalboard and run my dirt pedals through the front of the amp and time based effects through the loop. This is my only gripe with a lot of the new amps.
Once they have worked hard to recreate a great piece of gear, why not include an effects loop?
I know you can use the inserts on the back of the amp, but I prefer an effects loop as not to color the effects by the preamp section and have them sounding as they should.
Or am I missing something here?
These new Tone Master amps are amazing but would wish that Fender would install an effects loop with either a: +/- db level or a control for the effects level. This has been most of my reservation to actually buying one.
It's a modern amp and should have the tools for the working musicians.
So, do I have it right about the preamp in and return on Fender amps or am I mistaken in my thoughts?
Thanks, Woody