Correct me if I am missing something but Storm Raiders only helps you shrug off slows right? So it does absolutely nothing if you get stunned, rooted, knocked up or otherwise. Maybe I will try it again but I just feel like Grasp does more for me late game in terms of surviving. Also if that siege minion change ever starts again SotA will be total garbage in terms of picking up b/c you will not be able to get it fully stacked until late game.
You are right that Frozen Mallet is niche at best but it is still obnoxious to come across it regardless of when. Also, the fact that any low CD ability that acts like an AA or a champion that has ranged AA can constantly apply that slow makes it far more obnoxious than wither could ever be.
Rylai's is one of if not the most broken item in the game. It's extremely easy to build and makes mages nearly unreachable without a pick and seeing how almost every mid lane and support lane is a ranged AA mage it is guaranteed to show up every game.
Speaking of items for bruisers they have all seen tremendous nerfs over the last few months and feel worse than ever.
IBG got -25% of base AD for the sheen proc... Much rather they would have hit sunfire cape only and left IBG alone.
FH feels terrible to rush in most AD match up's
TF takes far too long to build as Nasus b/c let's face it you are not going to be in a CS/kill lead almost ever so IBG is going to feel more natural b/c it let's us survive and do damage but it is underwhelming the longer the game goes on and armor get's stacked.
Tenacity does almost nothing for you unless you and your team are ahead. Making it almost completely useless outside of early game...