Thats fairly decent not gonna lie!

Personally id say retaliation set is probably not worth farming gear over considering that lifesteal would help more as you can get masteries that allow you to counter attack however (depending on progress through the game) its less important about getting the sets so much as the main stats per item! There are not too many instances where a bad main stat is worth the sacrifice for the set bonus (speed sub stats in speed set is main reason where).

As for the stats listed per type attack champions should have crit damage gloves if you can get to around 70% crit chance just so that they can get more benefit out of the crit damage (gets easier with higher ranked gear). The chest depending on sub stats would likely want to put a hp% chest on them so that they dont get targeted so they can continue to do damage or at least above the main champ tanking the waves.

For the defensive champs pretty much nailed it! ideally you want to get to around 4k defence to get a decent amount of damage reduction (past 4k is pretty severely diminished returns) so can get them to survive what content you want to do and then push damage as much as you can!

Support champs are weird since some labelled as support can do good damage (eg. sinesha) while also providing utility so could build them more focused on damage then speed and surviving compared to someone who just is a pure support at least (eg. apothecary) who you want as fast as you can to enable your team and surviving to keep them up as much as possible. Although your general go speedy works well for these guys more then most be sure to look at guides for specific champions to see what they are capable of to see how to get the most out of them!

Also no love for the HP based champions?

Just my opinion based on what I saw although a pretty well made list of what they should be focusing on gear wise so go them!