As long as you can individually own your choices and change whenever you want, how you want it sounds good. I would go for sustainability, and social, or some kind of crowdfunding.
Also any profit (after covering the very acceptable bunq costs, that will keep bunq healthy and our monthly fees low) coming back from investments should be my decision what happens with every single Euro of it. Re-invest, donate, payout, whatever I want and whatever is possible.