I don't know how long will it take for upstream to release new version and SNI is extremely usefull. So may be you can add support for it before next upstream release? I've tried compile and install wget-1.13.4-r1 with patch from commit in $URL in it works good.
Created attachment 315259 [details, diff] wget-1.13.4-sni.patch Patch for wget from upstream to add SNI support.
Created attachment 315263 [details, diff] wget-1.13.4-r1.ebuild-sni.patch Patch for net-misc/wget-1.13.4-r1 ebuild to use SNI patch while emerging.
wget-1.14 is in the tree now