Membership benefits should be in other cryptocurrency denominations since everybody won't pay using bitcoin mentioned in the membership form.
If you're using Bitcointalk but not Bitcoin, you're doing it wrong 
It is necessary to be reminded so we don't forget too quick that bitcoin is sponsoring the forum and as the name implies bitcointalk is a platform primarily projected for bitcoin discussion. I guess every other discussion such as alt Coins is just a demo While it is officially prioritized for bitcoin.