Remember "target selection"?

Once upon a time teams had spatial peel (slows, knockbacks, other things that made it hard to actually get to the adc). This let Bruisers and Assassins try to navigate their way to the adc by diving/flanking respectively, and if they played the fight well and got in melee range, they could kill the adc.

Now there's narry an attempt to even keep enemies away, just throw some shields/heals on the adc and hope you win the statcheck. Bit boring really.

Saw this idea in another thread: Duskblade is gutted but gets "make an enemy immune to shields/heals for a few seconds" or "GW and deal damage that goes through shields for a few seconds". Unsure how this would be implemented exactly, but it's got obvious counterplay: CC the assassin until the effect runs out.

Tack some effect onto crit or a crit item that's like "does more damage the further your enemy is" and nerf base damge accordingly. Makes sense since you can aim for the vitals properly when they aren't in your face. This is basically the opposite of mages who get Lichbane passives so they have some recourse in close range; adcs should do a bit less damage while they're getting punched in the face. Alternately, make a branch of Precision runes that say "get AS if there's no enemy within 200 units" / "get crit damage if there's no enemy within 200 units" / "get LS vs champions if there's no enemy within 200 units" (sucks for melee tho so not exactly like that).

Make a support item that gives spatial peel. Delayed small AoE CC active, maybe? Something less obtrusive than a deployable wall, but would have to be played around in much the same way.

However it's done, bring back the teamfights where it was important to read the battlefield and make a tactical approach, instead of this enchanter statcheck nonsense.