I suspect there will be many lease returns when the Puma/ 225s are eligible for lease return from all operators. The leasing companies will melt with the write-downs in value. Those operators who own them will write the value off in their next quarterly reports. Both BRS and BBK can probably absorb the cost, not without pain (esp for BRS being a smaller company) but I don;t think it will push any over the edge.
Most of the leasing companies want the ac returned with zero hours on the major components and a g check. That's about $2m worth of work to hand back an ac which now has little value commercially (at the moment at least). The losers here will be leasing companies by miles.