The first crowdfunded feature for Weblate is here - Voting for suggestions.
Once you enable this for your translation, you can vote for translation suggestions and once they reach defined number of votes, it will get accepted. You can however combine this with other Weblate features to achieve different setups, see our documentation for some other use cases.
This is also most likely last feature for Weblate 1.6, so you can expect release in next week or two in case no major problems appear.
PS: There are still some features to fund.