I don't think we need to fear assassins in 8.10 more than this champions.
right now is the example of the next 8.10 patch, so far i see 3 champions able to build light armor while in same time able to put alot of true damage to shred anything in their face even tankers while able to suck some damage.
People are worried about assassin in 8.10, fair enough but i'm worried about
,etc special
that able to use true damage keystone + IE true damage + building light armor builds.
Such builds could make them more viable than any assassin since they can shred anything in their face while in same time suck damage and tank for while, while assassin on other hand mostly goes for full ad with exception of
and
but if they went more defensive they won't be able to deal with tankers while squishy still would be hard thing to deal with because of the support.
But champions that i mention early they would be able to delete squishy while in same time able to destroy tankers and all of that while able to suck alot of damage and that because they won't need to build any special ad increase or special armor pen because the new IE+true damage stone = enough damage.

+
it enough to ignore the whole assassin burst so in others word next patch he would be able to tank more assassin damage and ad damage in general while able to do the assassin job more better since he can just kill everything include tankers much easier due the over true damage.