I totally agree that there is a solution that fits all. Different locations need to be looked at in different ways and different solutions should be applied.
I guess, what Pippa is refering to are Camp/Lodge owners that make large profit from photographic tourism on their land. To be honest, I don´t see any reason why they should make even more profit through hunting, either. They are interested in wildlife conservation and they are taking care of it for their own sake already.
The situation changes, when you talk about land that is not owned or made use of at all in this sense. If there is no option of photographic tourism, the wildlife is due to suffer from farmers/poachers/impact with locals etc.
But, if those areas are not suitable for photographic tourism, I guess the main reason is remoteness or harsh conditions. If so, who is going to control the hunting activities? Obviously nobody is able to control poaching there, so why should they be able to control hunting?
BTW: Please enlighten me, how the same land can be suitable for hunting, but not for photographic tourism? Is it because the hunting industry has so much money, they can afford to build their own infrastructure, whilst Government/NGOs/private ventures can not?
Wildlife in general is a "renewable resource", but some genetic pools have suffered so severely that I am very sceptic about the killing of even a single animal of this type. If I am not wrong, tourist hunters are interested in shooting for example large elephant bulls with huge tusks rather than those with small tusks that threaten to dominate the genetic pool already. In that case, hunting would make the situation even worse.
Lions have suffered serious problems due to inbreeding in some areas in the past. How can you verify that you don´t happen to kill one of those from a different root hence increasing inbreeding even more? Unless you breed them yourself and end up with canned hunting I guess you can not.
All in all the solution you suggest seems to me like changing the situation from uncontrolled killing to controlled killing of smaller numbers. Hence, it is an improvement to the situation as it is, but not the best.
Abstract thought:
Why not have KWS itself conduct "hunting safaris"? They have plenty of occasions where they need to kill animals. Let them take tourist hunters to kill those specific animals and all money would go straight back to KWS. (I hope KWS will not stone me for this suggestion :-O ).