In response to building and not building LB for Titan. Every group does different things, if you can beat him without LB then good for you. But that doesn't mean groups that LB will fail, they just prefer a different method.

Also, in building LB it definitely appears to build slower (or slightly different) to how it used to build pre 2.1 and it has nothing to do with the stacking nerf. I've seen non stacked groups build to 2 easily during heart phase only to turn around and have barely 1 bar during other attempts with very little change in how much damage was taken or abilities used.