Is this an unfair rule in Cricket ?

Ryobi Cup ruling
No runners allowed for injured batsmen
Seen this controversial rule in the VI v WA game
Marcus North [back spasms]
Adam Voges [ groin]
Both denied a runner when WA batted 2nd in this match
Voges batted briefly at number 10, b4 retiring hurt
North did not bat
WA finished the innings 8 wickets down in a run chase, with overs left to be bowled
A disappointing end from a spectators point of view
Is this a fair rule ?
BETTER RULE ?
I think a fairer rule would be to declare who is injured , and then make them bat as the last batsman
In the Voges/North situation, bat them 10 + 11
No runners allowed for injured batsmen
Seen this controversial rule in the VI v WA game
Marcus North [back spasms]
Adam Voges [ groin]
Both denied a runner when WA batted 2nd in this match
Voges batted briefly at number 10, b4 retiring hurt
North did not bat
WA finished the innings 8 wickets down in a run chase, with overs left to be bowled
A disappointing end from a spectators point of view
Is this a fair rule ?
BETTER RULE ?
I think a fairer rule would be to declare who is injured , and then make them bat as the last batsman
In the Voges/North situation, bat them 10 + 11