New Game mode for the Harrowing?

So with the removal of the Crystal Scar and Riot wanting to make new game modes to create more opportunities for experiencing different adaptation of LoL and events associated with it, one of my absolute favorites has to be the Harrowing. but until here recently the game modes have been repetitive and unchallenging. The game mode that I miss the most has to be Doom Bots by far and I personally have yet to see it make a comeback, Why I'm not sure, but Legend of the Poro King and All for One have dominated the recent game modes.

With this in mind since the new rift map has been released they haven't done a seasonal change to it either like they did in the old Rift of days past. I would love it if they brought back some of the old spirit of the old Rift by giving it a harrowing Makeover with a Doom Bots twist Featuring the the characters of the Harrowing and Shadow Isles as the opposing team and their abilities.

I think it would be a great concept for the riot team to pull off for a special event and make a classic comeback for their design flair. Its not a concrete idea yet but with the reworks of some of the older Isles Champions I think this could be a great game mode. Ghouls for minions maybe black mist versions of the jungle camps, spooky new terrain and turrets, with champions to boot. What do you think? with the new season coming soon and reworks taking an overhaul in the game I think a holiday rework of the rift would be amazing!

Let me know what you think, could this be a great idea for the Riot team to pull off?