The community is free to do as it wishes, and I can see the attraction of this "project". But, I can also see why the "official" members of BC Dev team cannot support this action. The Devs are focused on building the BlackCoin Corporation in a professional, business-like sense and we should allow them the space to do that - they are doing AWESOME so far!
There would be harm if this was "officially" supported by the Dev team as it would hurt their reputation. But if some of the community want to do some organised purchasing, then I can't see any harm in that.
Just also remember that whatever is done the record thereof will be in the graphs. Just like a credit history, a non-payment indicator stays there month after month until it falls off on the left and over time one can explain it away as a problem of the past. However the price graph can be pulled from the start. If the "price increase action" is a sustainable one that leads to a higher sustainable value then great. If however it is followed by a "price decrease action" then it will stick out like a sore thumb and be difficult to explain away for some time and will be used by analysts and tools to judge the coin's risk profile.