Riot, Can You Make Building Offtank More Viable?

I don't want to bore anyone with a wall of text, so I'll simply say I very much miss how in the earlier seasons of the game you could build defensive items on non-tank champions and actually feel a tangible increase in your survivability. Before Runes Reforged (and maybe even a little before that?) I routinely built as an offtank. Certainly not a true frontline champion, but you could at least block skillshots for your ADC, position yourself for ideal Q stun angles, be at the best place to create a magical journey for your team's escape, etc. It was a LOT of fun and way, way more interesting than playing the much more "all-in" run of the mill hook champions.

Now it feels like you're 90% "locked in" to a play style at champion selection. The items, especially defensive items, don't have the kick they once did. To top it all off there aren't even any good runes choices for this playstyle either. Grasp is pretty bad for ranged. Aftershock is clearly made for melee, and Guardian encourages playing a super passive lane, not to mention feels pretty mediocre given it's long cooldown.

I don't have any well-thought-out suggestions to remedy this- though maybe adding 1-2 items with massive defensive stats that actively reduce your damage output (like a weaker but permanent version of Gargoyle Stoneplate?). Just wanted to lay out my $0.02 for whatever they're worth. Would appreciate any perspective, facts, etc. that I might be missing here. Thanks!