It does not have to be a club. Everybody who is serious enough to build a treasure with Bitcoin will always set aside a tiny portion of his regular income to buy Bitcoin. And not just Bitcoin, it could be divided among solid altcoins as well. The better club is HODL club. Not everyone who buys Bitcoin is committed enough to HODL them for a long time. Many are emotional owners. They cannot HODL when the times are bad. HODL club is made up of stronger Bitcoin supporters.
Sure, I don't mean a club where people need to sign up. More like a board where people display their commitment by telling the rest of the world that they're investing in the long-term.
I'm not sure about pure HODL. If everyone just hodls, what happens to actual adoption? People should be spending at least a portion of what they buy every month to foster adoption, even if it's as little as buying a Cryptokittie or playing some other blockchain game.
So, this will be the board of people commit to buying bitcoin every 1st day of the month?
While it's a good idea for the long term but not really if you have to spend it to buy something when the price drop significantly, imagine if bitcoin price is $10K in the 1st day, then it drops to $8K a few days later, a bad idea to spend it at that moment.
Well, I prefer to buy bitcoin every month, not always in the 1st but whenever I think it's a good entry point, then hold it until an unspecified time. Usually, I will convert my bitcoin to cash in order to buy more btc after the price tumbled. Anyway, I'm in.