Variable item caps are untapped potential for champion diversity and item expression

There's so much potential creativity in decreasing or increasing a champion's item limit. You could have champions with insane AD and AP scaling but are limited to only 4 items. Or even more extreme you could have a champion that gets 75% active item cdr as a passive but is limited to 3 items. They could then make playstyles around the hextech items or zhonyas or youmuus/edge of night and use those actives as if they're basic abilities, multiple times in a single team fight.

At the other extreme you could have a champion that's able to get 7 or 8 items but has very poor scaling or maybe a passive that increases active item cdr. Maybe the hardest scaling champions could have 7, 8 or even 9 item slots.

I see many possibilities with this and I think it would open up very novel and interesting champion playstyles/item synergies. Can you think of any ways this could be used to make a cool playstyle?