Define "heavy user."

If your usage is so atypical (24/7 site mirroring/bittorrent/4K streaming, etc) then your purchasing advice is pretty much useless for the vast majority of home users.

I work from home, am often connected to multiple VPNs concurrently, have essentially two active households where the primary entertainment is streamed content to 4K-capable devices using services that deliver much of their content in 4K.

Oh, and btw, the R9000 does have active cooling, but is still categorized a "consumer" router.