I use workout creator a lot to build or modify my own workouts.
What would be really handy would be something to see what intensity level Im setting the blocks in the workout via colour coding, ie blue for recovery, green tempo, red VO2 etc…
Or even markers at the side similar the the FTP line.
Not fussed about them when actually using them but would be handy at a glance to see what workouts include more VO2 than Tempo, etc…