Having Manu and JJ as our 13 options is daft in my mind. They are two very different players, and so you'd need to build two gameplans around who happened to be playing at the time.
JJ, Daly, Slade (unless he goes to 10) at 13, with other fast/agile options at 13.
Then at 12 either go down the playmaker route of the Slade/Devoto/36 style player, or more of a bosh option with the Hill/Manu type.
Perfectly, Mauger will work more with Manu and improve his distrubition in a similar manner to Nonu, and he can take the 12 shirt then.
JJ, Daly, Slade (unless he goes to 10) at 13, with other fast/agile options at 13.
Then at 12 either go down the playmaker route of the Slade/Devoto/36 style player, or more of a bosh option with the Hill/Manu type.
Perfectly, Mauger will work more with Manu and improve his distrubition in a similar manner to Nonu, and he can take the 12 shirt then.