Who is gonna raid now with the iLvl 110 gear handed to people??

[Kiokin]

Then let's say the that the iLvL of the gear then will be i120 for soldiery and i130 for upgraded/raid gear. It then create a glut in the item level where mobs now need to be balanced to the increase in high level. Seeing as how people are strugglign with current content, do you think that's a good idea ?

You mean like they already did? Unless you forgot, the max ilvl of gear for patch 2.0-2.1 was 90 (sans weapons). In 2.2, the new tomestone gear was released and was 10 levels about that, with an upgrade 10 levels above also. So this hypothetical situation you're afraid of has already occurred and has not destroyed the game, so what is your argument exactly?