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It will be great to have a hybrid weapon with level 95 and T80 stats, which can change into a weapon for each style – and that is the best aspect of it.From http://www.viprsgolds.com/.
It would take 2.5 minutes to change styles and could switch every 10 minutes. Since the idea is basically a slayer's wet dream, components needed to craft it could be bought with reward points or integrated into level 75-80+ slayer monsters as rare drops.
Ideally it would be untradable, crafted from scratch with untradable materials, and be very difficult to get. It shouldn't devalue chaotics or other T80 gear, thus it would probably be a 2h with some sort of debuff to make it slightly less powerful.