Seasonal Dungeons?

I have been playing this game on Xbox One since it's release on console. I have seen so many different events created and played them for a couple years now. Needless to say it's become quite boring doing the same thing over and over again for the same rewards. Some of which your not able to gain twice so having gotten it one year makes the next year pointless. Having said that I have had some ideas about seasonal events. Firstly I honestly have been waiting for the MUSIC to be changed to match the season events. This would imho create more emmersion into the event and make it more exciting. Secondly make the events have different tiers of rewards earnable. Not depending on anything but chance on what tier you get. Make it random for everyone. Make rewards tradeable but not sellable. Make it so you can get them multiple times so you may trade with others who have a different tiers that day. Lastly and I'm really passionate about this one... Make seasonal Dungeons! Playable ONLY during that seasons event. Example... The fall event is I guess supposed to be a Halloween type. So create a haunted Mansion dungeon. Seriously this could be so much fun if done right. I have thought about this for awhile now. I think the haunted Mansion could be accessed from an abandoned train station outside the enclave. The first part of the dungeon would be boarding a ghost train and working your way car by car to the engine room. Where the first boss would await. Beat that boss and the train stops outside a huge creepy Mansion. Second area of the dungeon could be a hedge maze that changes Everytime you do the dungeon or shifts every 5 minutes or so. If you make it through this maze in a set time limit you have a bonus chest activated in the mansion at the end. Of course at the end of the maze is the second boss. The we have to enter the mansion itself. Oh man this should be a dark creepy place with flashes of lightning. So we would have to fight through mobs and up different floors and back down to solve the mansion door puzzle which would be right back at the beginning and lead down to the basement. The final boss awaits down below. Got a couple ideas about this boss. Maybe it's an old dnd classic monster... Living wall! Or maybe it's an evil mirror that creates an evil counterpart for each adventurer. Dunno but the possibilities are endless and the opportunity for introducing new mechanics are boundless. Well anyway I think I got carried away a bit so now I will simply ask for some feedback! Let me know what you all think.