NA shield summoner build, feedback please

Just a work in progress/ experiment, lemme know what you guys think?

http://www.pathofexile.com/passive-skill-tree/AAAAAgQBBS0UUjpSR35gS3Tteu-E2YTvmSurxd-_h2phIUCg705giL_VRJ6wc-y28fRTu10AIWB08Z65KLW-p9Xt0k3AD14TG8jdDfzFZ6CHdkp9Vvp0QYoiwPN89cCmd9d_K9aKwQfXfjQ1fpoDAOXFYVIyCe4Oo-fL9TGw5w8bqojtbUqBOhjbW6_UUgbul3BjF1YEhmCnMPe-FCBQRyzpFSCSzeKArEdVqZe0rLrh2g48FHFbPSpNPyduqq6TbPaC5IqvkBGmVzrhiPGnn5-jAdwb-iXfpBni6mVNFHXB2A==