Huh, what a coincidence, I just came up with more or less the same thing.

The problem for MILD with me is that the combination of visualisation and affirmation prevents me from falling asleep if I try to maintain it constantly/actively. But MILD works best if your intent is the last thing on your mind when you fall asleep. So I thought, why not integrate it into SSILD cycles, which counteracts insomnia? This way I have found that I can keep up my MILD affirmation right up to falling asleep (rather than doing it actively for a while and then giving up so I can fall asleep).