The Entropy Reactor is an exclusive item of Month of the Mad God 2019 and one of the most desirable items in RotMG. One of the items required to complete the buildup has a ridiculously low chance of dropping from the already rare UFO encounter.

This means many players who have grinded many hours for all of the other parts will not be able to finish the item purely due to something out of their control.

This issue would be solved if the Locked Reactor became a quest from the tinkerer allowing players to complete it. This doesn't mean everyone gets it for free. People will still need to spend time to earn it and it removes the unfair RNG element.

It can still be a grind but at least make it so players know they can get it, rather than spending tens (potentially hundreds) of hours grinding with nothing to show for it.