Marek, let me try to understand this better and I will see what can be done. So when you say MMP 5m that is your best 5 minute power? I am used to MMP being mean max power but in this case it seems to be Maximum Minute power (kind of the same thing) but I am seeing reference to a 3 minute test. So 5m max power is essentially your VO2max power… This is very similar to your highest minute power in a ramp test. Let’s assume I understand that part correctly, or correct me if I am wrong.
So you have a workout in intervals and lets say it was 5 X 1 minute intervals at 300 watts in Intervals.icu and your FTP is set to 250. If your FTP is also set to 250 in our app, then this 5 X 1’ interval would still be 300 watts. So nothing changes. The problem becomes when your FTP changes your watts will be slightly wrong in both intervals and TrainerDay.
If you are doing higher intensity work it makes sense your coach is prescribing in MMP, really I could see the argument that it might be better than FTP in general depending on the types of workouts you do, and even when you do a ramp test it’s actually more of an MMP test then an FTP test. People that never do long efforts could do fine in a ramp test but terrible on an 2X20’ FTP test.
So the bottom line is, if your workouts are in intervals.icu and workout is based on FTP, even if we modified our app to work with MMP I don’t think it would help. David’s platform is obviously designed for Coaches to work with Athletes and ours is not, as well as obviously many, many, many other benefits intervals.icu brings so I don’t see how I could help solve this problem without David also doing the same thing. So that’s the bottom line and a very long way of saying it is I don’t understand how I could fix this 
Please help me