Sounds okay... but what about those videos of O-Sensei where he's surrounded by a bunch of guys with swords who all strike him at once? Certainly he's not dealing with them one at a time. Is the movement he makes irimi or tenkan? How do you irimi ten guys on all sides of you?
Different thing. It's more to do with zanshin and eight direction awareness. (And sen no sen or as I say 'being with all of them)
The foot movement depends on which path you take but is not something you analytically consider. One thing in common with the o/p is that whichever path you take will be as a motion irimi.
Irimi and carry on would be you leaving them behind. Irimi and tenkan would be you turning to do something. (although it may also be irimi taisabaki).