Bakkies you have a point that they might well be bench players after the World Cup, but probably not more than that. They are unlikely to be the major starters though.
Even as bench players, there may well be young players who appear to replace them. There isn't much shortage at centre or 9, more so at lock.
Basically my point is that most of the departures don't make that much difference.
Ewen the truly bizarre the thing about Super rugby is that they chose at its birth to set 5 teams against the 16-18 of their rivals who compete for the same players.
It was suicide. Nor have they made much effort to add more teams to make themselves more competitive.
Bakkies AAC is probably at the end of his time, it has been years since Horwill played very well, and Nic White was never special.
Genia is a major threat though: I think he's probably frustrated at his treatment over the past two years more than actually wanting to leave.