On the summary page the stats are confusing and not the best of value.

1- Yes i want to know how many records I Broke. It would be nice to select that stat and have it show me which records i broke with the old and new record.
2- workouts before level up is good
3- total strength. It would be better to show what the volume was for this workout, or both this workout / total volume.
4- on chart page, the volume history for each workout not averages.
5- i like the volumes(strength) for each body area on the online info page.

[Edit: see also https://muscle.userecho.com/en/communities/1/topics/141-summary-after-your-workout-about-what-you-need-to-do-next]

+1

On the summary page the stats are confusing and not the best of value.
1- Yes i want to know how many records I Broke. It would be nice to select that stat and have it show me which records i broke with the old and new record.
2- workouts before level up is good
3- total strength. It would be better to show what the volume was for this workout, or both this workout / total volume.
4- on chart page, the volume history for each workout not averages.
5- i like the volumes(strength) for each body area on the online info page.

to be clear on this workaround, until this gets enough votes, while in the workout select the exercise option at the bottom of page. Then select exercises and just add the exercise as if its a new exercise in the workout? Or do yiu mean select edit workout while in the workout?

i found a work around that lead to an idea. 
under rest timer settings if i toggle off full screen it shows the workout set page and the plate icon is there. I can use when i want it. 
the new idea

Eliminate or keep the full screen rest timer option . On the workout set page at the bottom you have the yellow bar to “save the set (rest time remaining)”. It hard for me to read at any distance which is why i like the full screen rest timer, i can see the count down. So how about on the bottom of the working set screen you have the yellow bar at the bottom, (finish set bar), grey to begin with still have the finisih set and remaining time text and have that bar fill up with yellow showing the time left counting up to full rest, and  the start of the next set. 

I don’t see the plate calculator on the timer screen I have to hide it.

Having just the exercises for the same group you are trying to swap for is great. Possibly even the best swap listed first then second best and so on.