that's what I call : "listening to community"!After bugging ID-Cooling for some time, they have now added a backplate due to customer requests.
If you're a purchaser of the IS-47k from the J-Hack store, I have a 3 samples to ship for free. If you're actively using the IS-47k and would like to improve it, please send me a PM, and I'll set you up with one of the samples.
Scythe did it also for their Fuma series. Retention system remains a key point on cpu cooler.