I primarily run a Striker Titan as my main, hopefully I can shoot you some advice. Bungie decided to create the Titan as the melee heavy "tank" which it's why a lot of the gear terms to lean towards strength. However like you I try to run with as much intellect and discipline as possible. There's really no need for high strength unless you are a defender, to boost how often you can get disintegration as well as the force barrier that goes with it and fight longer as a result. Strikers have the powerful shoulder dash, which doesn't require any strength, and it When I run the Striker class, I tend to go with two specific roles whether in PvP or PvE. One is Super heavy, running with the exotic Helm of Inmost Light to maximize the effectiveness of the Fist of Havoc. This tends to be a little more balanced as the helm gives you a lot of strength, and the rest of your armor should be intellect and discipline based, The other one is grenade heavy, running with the exotic The Armamentarium, for the +1 grenade as well as high discipline. When I run with this setup I have no strength at all, and my discipline is maxed out. Both of these fare well in both PvP and PvE. You can check out my profile to see what gear I tend to run with on my Titan. I also stated a build thread a while ago, just never got the chance to finalize and post my results. Hope this helps a bit with building your Titan!

Discipline. Monte Carlo v2.0 and Armenterium v2.0 fer days.