Not something I've really noticed, but the other day I was thinking about Phil leaving the band, only to carry on working on Genesis projects just a few years later (before the 2007 tour) and I thought, in hindsight, Tony and Mike could simply have stopped with Genesis when Phil quit and simply worked together under the Mechanics brand, leaving Genesis on a high and no doubt ready for reunions down the road.
It would perhaps made more sense had it been done this way ultimately and maybe having Wilson as a singer with the Mechanics, given him less criticism and comparison to Phil.