I like playing HU in client, but it's usually hard to get action. I doubt were ever going to run HU shootouts or anything that complex. Many players have the misunderstanding that HU is all luck, and full ring is where the most skilled gameplay is and it's ironically to the contrary. HU forces you to play marginal positions against wide ranges. If you try and play tight you'll go broke from lost blinds. Basically, it's a constant game of adjustments and outmaneuvering where no set strategy really keeps you safe (except not playing maybe).