I've kept my VII's mining the whole time. I was barely above breaking even at the lowest point, but at my rate of around 8 cents/kWh and with the cards tuned for efficiency it's never made sense to power them down since the Radeon VII launched.And you have a relatively power efficient system for mining I guess? Did you keep mining eth all this time? Or only recently? Or not at all?
Like in February of this year it was NOT worth it at all to mine, even with 10 cents/KWH electricity and already paid off cards. I could not justify it. The Radeon VII is still lower in power use, maybe it made sense for you.
I feel like the VII can do a lot better, because it does fairly well on stock. I don't know, like with better HBM2 timings.