I know that Collection has feature for creating forum thread for new item entries. For example I have mine setup as a Garage and new vehicle will create a new thread in the forum.
What I would like to see happen is a new thread for modifications. So if someone install a new modification on there vehicle then a thread in the forum is started and conversation of the modification can be discussed. Like I'm getting ready to install +75HP injectors in my diesel engine it would be cool to just add the mod have the thread start and continue the conversation of the new injectors.
I've asked in the past about this one... (@michael look back in my support request) Adding a maintenance scheduler/logging feature or addon. So like on the Garage side again if you have a vehicle list you can update your mileage and it would automatically notify the user that Vehicle A needs a oil change. Then after the work is done the user can log the oil change, parts, prices, and what labor was done. There would be a log of all maintenance on the vehicle.