I assume the problem with the "lay and play" or other quick fix solutions is that they may be suitable for football, but almost certainly aren't suitable for rugby until they fully bed in.
I can therefore see wasps' reluctance to spend a considerable sum for something that wouldn't suit us, even though it'd likely solve the issue for ccfc.
It's one thing providing for a tenant, but no one is going to do something that is significantly to their own detriment
The perfect solution to this would have been a new pitch laid in the off season, but the CW games meant that wasn't possible either.