Twisted Treeline items in Summoners Rift?

These items are Twisted Treeline exclusive, but I don't get it?
Some of those items there are really strong and could be useful on so many champions.
For example,
would go very well with
along side with
Burst mages like
could be even more burstier with
along side with
(If they stack)
Bruiser champions like
would go well with
and 
I don't see much use for
unless
builds into 
I just find it sad because only a few people who play league of legends hardly play twisted tree line because (opinion) of how boring it is, and these items never see the light of day.
(which makes
in particular pretty good when he can get both).
or
, unfortunately.
could make a decent option for a QSS upgrade for those who need AS and CDR over AD and Life Steal, or could be reworked into an AP QSS.