My idea would be as this: one can by lootboxes in the shop, for like 10€ per thing. Most of the time you just get nothing special, but a vote (more on that below). And sometimes you get a T-Shirt, a free Sailfish X license, ToH Keyboard or whatever is hot and funky. Just for the mood.
But in the end it’s all about the votes. It’s a bit like democracy was in the 18th century: only the ones with money were about to elect. And now I have paid for a vote, so I can vote. And the thing I vote for is what a Sailor will do.
The community both complains and understands that Jolla does what their paying (platform) customers need, because that is what pays the bills. Now we are paying. Everyone can do a suggestion, then there is a (public) vote about what people want to see, and then Jolla can set a price on that. And if enough people with paid votes said “yes, I want this”, then it will be done. We have payed for this, right? 
It’s like free software bounties.
So, people say they want the old phone pickup gesture pack. Jolla says, ok, will cost 200 credits to get that as option in the releases. Now if enough people confirm that they want it then the votes of these people will be gone from their accounts, and it will be done for next release. If I severely need this and don’t care about the money then I can go and buy 200 lootboxes, get 2 T-Shirts and a cup, and can pay the whole feature alone. Or people will just pile up over time until the feature has enough votes. While the voting is not done I can always decide to withdraw my vote and put it somewhere else, and if a voting for a feature does not get enough votes in like say 4 weeks it is cancelled, the votes are moved back to the accounts, and it can be restarted only after the next release or whatever.
