It might just be me, but all I'm saying is, that once a rider has completed a maximum quota of rides a Tactical Substitute shouldn't be allowed on any of said riders remaining programmed ride.
If a reserve is getting 7 rides, in the main it means you're getting an advantage from their scoring prowess. Getting to use a Tactical Substitute on a remaining programmed ride that they can't participate in, It's almost the equivalent to 2 Tactical Substitutes a meeting.
That's what I mean by loophole.