Would you be willing to give some info why this is such a hard thing to implement so that we can understand....?
It was "Such an easy thing to add" that raised my eyebrow. There really are NO easy adds.
A system like that, with hundreds of different combinations of types of match, match order, teams, stadiums etc... It would need a huge amount of testing and would be incredibly labour intensive.
As always, it's about priorities: when the user has it within their power to play individual matches and make up their OWN tour with just a teensy bit of imagination, do you want to spend all that labour making it more convenient for them or would that time be better spent elsewhere?
In the past that's why it's always been low on the priority list, and it may well prove thus this time too. It's not quite down there with seagulls on the outfield mind.