Just want to put my 2c in, I am running 4 separate rigs and have moved them all across to 11.2. I have seen the following:

• A noticable increase in reported hashrate on all 4 rigs (around 1-2mh/s on a 6 card rig)
• Although hard to specifically quantify, all 4 rigs seem to me to have a more stable hashrate, less dips.
• No reliability issues so far, all been running 24x7 without problems
• An increase in (nanopool) reported average hashrate on all rigs - I believe this comes from a combination of what i think is a more stable hashrate as well as the small increase seen with 11.2
• I needed to increase the DCRI setting on my rigs after moving to 11.2 for best results in my setups

I'm running RX580's on my rigs both 4GB and 8GB versions - so for me 11.2 is a big thumbs up, thanks Claymore