control psi was weakened even more, yes
but willpower was also weakened; except classskill and potions, you can only cancel cc with martyr skill now
you can still do a good job CCing a healer or MVP of enemy team given you can survive the AOE in the battle
CCing a MVP all the time is extremely useful and funny, although casualplayers wont value that as they only look at damage-numbers (but nvm, this does not matter) and cc is not listed there
CC psis main problem is its paper more than anything else
it suffers so much from AOE its always amusing to see it die unintended die in some AOE
because of that, for pvp there are only 2 common ways; "support" and "aussault", while "aussault" does not so much more dmg and dies also very fast so only "support" is left normally
there are some exception players which play cc psi and enjoy, but majority will go support due to best performance
TL DR: its still "dead" due to being paper; since 7.0