Not sure how the Cecil effect is connected to 200 excess lions in the conservancy in less than 12 months.
Have lion imports been banned to some countries ?
Have 200 hunters suddenly cancelled hunts ?
Is there any evidence of any of this ?
If I was managing an oversupply of game I'd be contacting my regular clients and offering cull hunts at cost + a small percentage rather than the normal fees. At least it would get some income and cover infrastructure costs, wages and depreciation of equipment for a period.
Anyhoo, good advertising for the Conservancy in the short term.
Most lion hunters are American and USFW and effectively stopped lion imports in to the US. Also an auctioned hunt for a lion in the Bubye conservation area was cancelled due to death threats.
But you are right the overpopulation won't have occurred overnight, but one of their tools to remove lions as been effectively stopped, as well as an important income stream for the private reserve.