so if I understand this correct, form will be the new mood? And we have to find out ourselves what the difference is in performance between a form 4 and a form 8 for example?
form and mood co-exist and that will stay the same, the total influence of both combined stays (more or less) the same only the importance of each of them varies. In the old engine (or current competition engine) mood can be responsible for more then 90% of the combined advantage, in the new funrace engine this has been halved (so maximum +45% of the advantage). While the importance of form increased by app. the same number, and now can be accountable for more then 50% of the combined advantage. Also keep in mind that both form and mood can have a negative impact as well, the zero effect point for both of them is put somewhere around the 60% mark of their range.
A clue how to test this effect ? Well the cleanest and simplest test would be doing a ITT funrace twice (with a different form). But then there is still a "hidden" parameter, cyclists will "learn" how to temporarily boost their form when it matters ! (I am not going to play mistery on the "hidden" parameter for long, you might have guessed it already, it is ofcourse experience) So one might need more then two ITT's to figure it all out.
in the changed funrace engine it was made easier to get back in the peloton, but probably I still have to change the routine that genrates the messages you mention because it looks they still appear on the older gap times.