I think its fine the way it is. Dont need more than they are giving us now. And PC account should not get speaker regen. Working as intended. If its not broken dont fix if. No support
How about, say if you login consecutively for 30 days, you get 0.5 a speaker a day, so in two days you'd have an extra speaker. If you continue to login everyday past 30 days you'll have the maximum amount of speakers available.
Maybe set a second set of speakers in play solely for ads over complicated I know but hey I'm rarely out of speakers