So i have an idea to modify the old marauders cold rocket sentry build to 2.5
http://www.d3planner.com/915342422 with some grinding it could be possible to get. I know stats are off on items but its just to show idea. Get a nice 60 to 80 percents boost to cold dmg. Right now im running a work and progress on xbox. No RORG to free up glove for frost burn. No cold boost on amulet. No Etrayu either and it solos gr55 with ease. As i get upgrades and ancients it will go way further but not bad for only 7 hours of playtime on character. For season 10.