if Atina had a lot more CST capability, I'd be really keen to pay more to subscribe to it. But not at the rate that just the PDN plugin added to base altium! to be honest I'm not sure what features I'm missing in AD right now (vs the current super hi end options) as it's all I've ever known.
But if they leave AD in a half debugged 32 bit mess, and I'm expected to pay higher subscription to get properly written fundamental application there will be HELL to pay.. seeing as I've always pushed for subscription as long as subscription was a thing, now I'm paying it myself now that I own my own license, and I always pushed for updates when they became available before that...