Of course there are plenty of flaws, but still it is better than just give away the money without knowing what will be done with it.
Since the fund would be a "love fund", the decision on selling would have to be shared with the club. The value, it all would depend on the offer.
But a fund subscriber meeting would always take place to decide this matters.
If we could buy a player and allow the club to buy 50% of the football rights, it would be the best solution. The club would handle all the affaires on the contract and the selling price. But the contract between the fund and the club would have to meet certain clause criteria. For example, at some point the club would have to buy the remaining 50%, allowing the fund to have means to participate in a future transfer operation benefeating the club.
Imagine 50.000 fans give 100£ for the fund... it would be 5M£ available to help the club.
The profit thing wouldn't be the most important, but it would give the fans some sort of means to control how the money would be spent.