7 sub limit / injuries after subs?

I've just had a match with loughview (well played btw, your subs made the difference) but after he had made his 7 subs his flanker got injured and was given an extra substitution... Surely the team should just play with a man down (I know blood subs etc but since he's probably out for at least a day I'll assume it was an ankle or hamstring not a cut).

What is everyone's thoughts on this / could this be fixed?
This has been the case for a while. Im surprised you didnt know since in my opinion, and many other your the font of all knowledge.
Lol! We can't all be perfect!