Lets talk: Shields

Spoken about them in an earlier thread today, decided to make a seperate one. There is multiple ways to improve shielding, masteries items etc. but absolutely no way to counter them, other than waiting them out. Now here is a trick, that works only in the early game, as shield abilities are rarely maxed first (longer cooldown), and lack of cdr items. Shields are ment to mitigate burst damage, yet one thing I noticed, they last way too long. I looked up some champions with shields, like orianna, janna, lulu, karma and one thing I noticed. Their shields last between 4 to 5 seconds, a pretty long time with an 8s cooldown without cdr, assuming the cdr build, thats basically 1sec. where the shield is actually down, you cant really punish them anymore later on in the game. My suggestions are 1) Back in season 3 you nerfed Rivens shield duration from, 2,5s to 1,5 Yasuo passive shield from 2s to 1, to be oriented around countering burst, so do the same thing for these champions so they actually have to time their abilities, and not just get free health every few seconds, and give us more room to outplay, stuff like increased shield strength for shorter duration can be done to compensate. 2) Don”t like this suggestion as much as the first one, but a situational hybrid item that would let our damage ignore certain portion of a shields would be decent. Thoughts?