There are three types of special Crew Collections -- Weapons Shipment Hijacking, Prototype Carjacking and Theft of a drone. Each collection requires 7 items, and when completed, will reward you with limited edition loot. For a list of collection items and rewards, check out the image below.
Some of these collection items will be dropped as loot during missions, but unlike other collections in the game, your fellow mafioso must assist you with snagging all of the required items. You can ask for your family's help by posting a message on your Facebook wall. However, there are a few limitations -- you can only post one request for one collection every 48 hours, up to five Mafia members can help you on a request and, those who decide to help, will only have a limited amount of time to do so.
If you decide to help another Mafia member with their collection -- you can't help more than one friend at a time, and you can only help up to five friends in 24 hours. (For more details on helping friends find items, check out Studog's 'How to Help Friends find Crew Collection Pieces' guide. )
The good part about helping friends with these collections is that you both get the item. The lame part about these collections? There's just too many rules. We like the idea of working with our mafia to complete a collection, but setting a one-hour time limit to find an item to send to a friend is a little too tough.
The question remains -- should you even spend time on these Crew Collections? If you take look at the limited edition items' attack and defense powers, they're not that much better than items you can already get in the game. You can only collection one of each Crew Collection items as well. Since you're not going to build a bunch of extra muscle from these collection items, we recommend only taking on the crew collections if you're a completist or just want to try something different in the game.