Yeah - Andy - it's the "Flying Mass" - as you state - which I believe is TRULY KEY to the whole situation (or at least Part of the Key). Less Mass - less backlash. Although, yes - there is Tech to accommodate for that backlash (the proper term right now Escapes me).
As for your comment - Kurt the Doppelgänger - I would LOVE for you to prove something to me. And, yes - this IS INDEED a Bit of a Challenge to your comment of "...without thinking about how much it would slow down the print (it does, but not by that much)".
I know that in prior podcasts by Andy - he was working on Techniques to make tool changing faster. And, believe me - I CAN Relate - from my time at Essentium with the HSE 280's - and doing Tool Changes. I know that Andy kind proved that with the XL you can pull the filament out of the Melt Zone - which limits oozing and related problems - and he tweaked things for FASTER Tool Changes!
But - my Challenge - Print a Part (and, if you want - I will GIVE you a Great part as a Test - my Rocket design) - and print it with like 5 colors. But, then - print it AGAIN - with ONE Color - to confirm the difference. And, yeah - my Rocket is Designed to print HOLLOW. That being said - when I TRIED to printed it Hollow in Multicolors/filaments on the Bambu - it Screwed up the slicing - and tried to print material within the inner hollow space - and so I could NOT print it Hollow. But, maybe the Prusa Slicer CAN Properly allow it to be printed Hollow - in Multiple Colors!
Would you be willing to take on the Challenge???
I'd LOVE to see the XL Tool Changer print my rocket FAST!
And - Andy - I'd be curious to know if you have your profile perfected in a way - that you could potentially print the Same rocket, in multicolors - and do it EVEN FASTER Than my Doppelgänger!
OF course, if nobody wants to take on the Challenge - I will still survive...
-K