Ok. I've started playing a lot again and this was the first thing I noticed, being a TB player.
Deep Freeze doesn't seem to increase cooldowns.
Back when I played before, if I Deep Freeze say...a Sedna 7 seconds after she healed. She wouldnt be able to heal for another 5 seconds, because Deep Freeze would increase her cooldowns by (at lvl1) 130% (which would be more then the duration of Deep Freeze because heal's cooldown is 7 seconds itself (so 130% of 7 is 9.1).
But I noticed it didnt seem to work.
So I opened a game with both of my computers and used Oak (shield is a huge cooldown, its easiest to see a change there) and TB.
Ran them to the middle and shielded (lvl 1, so no debuff immune, and I saw the debuff appear), 35 second cooldown. I used Deep Freeze and the cooldown didn't change.
So I tried it on Surge of Faith. This time lvl 4 Deep Freeze (220%) on Surge of Faith, Shield and Pent and no change at all.
This can't be working right.
Edit: 5 seconds, my bad.