Imperial Oktoberfest? Well, for all intents and purposes I think we have a beer that is basically a Barleywine.
Massive sugar, with the associated cloying sweetness, large alcohol up front and all the way through and very little subtle respite from the sugar and the alcohol.
Some decent head early, but this fades quickly on warming to give a typical high alcohol “dead head” and sweet, thick body. Some residual lacing, but this is as a result of the sticky sweetness rather than any decent, staying head. Good orange color.
Smell is, unsurprisingly, sweet alcohol.
Drinkability is low, since the alcohol and sweet combo are just too great for much enjoyment. this does NOT drink like an Oktoberfest, in all respects this reminds me of a BW.