I disagree with classifying it as donating resources. You're not reducing what's being spent by the player who's building -- you're adding to the total that is being spent for that upgrade.
Ideally, I'd like to see them just reduce the build times a couple of days for the really high end items. 10, 12 and especially 14 days seems over the top. But, this at least gives SC something for making those reductions.
I think SC has a growing problem with high end players, who have purchased a lot of gems in the past, becoming dissatisfied with the game and the slow play at TH 9 and 10. This may solve some, not all, of that dissatisfaction. Besides, if they were going to gem, shaving a couple of days off of a long build won't be enough to make them skip gemming.
I also like that clan members would be contributing more equitably.




