Half the Support items are incredibly flawed in design.

and

You are stuck, glued to another character until you have farmed enough minions to fully upgrade these items. Too many games end up with this item being at its tier 2 state and being forced to help out in teamfights that do nothing to progress this item.

What if your lane partner goes back? Well you lose out on progress of these items. Another lane is struggling and needs some help to push back an enemy laner? Excellent you are behind on your item.

Jump into a lane to get that last bit of gold to get your item upgrade and now teammate nearby? LOL get fucked.

There is nothing here to promote good plays, just sit back be a submissive little bitch and wait for your carry to allow you to get those minion kills in the mid game. (Turns out, some carries are REALLY good at farming minions when they're at 60% health.)

Support items should be putting 50 gold per assist (While a charge is up) to these shield items to even things out with how restrictive they are to the supports that pick them.