Looking at match plans as this is something I have never used. Potentially a very powerful tool.
1. Dialogue box which advises at match plan is about to take effect or ask if you would like to proceed with "Insert Match Plan Name Here"
2. Have specified subsitutions i.e. sub on u21 players, player returning from injury
Part of my thinking is the times when you're cruising in the league and forget to make subs at the 50-75 minute mark when you want to bring on that 17-19 year old who you don't think is good enough to start but want enough time to develop. Or getting minutes into your star player who is returning from a month off.
At this stage, the options are very limited