Personally I'm not really concerned about future patches' tank dps scaling. Based on 3.x the devs can't seem to make up their mind about what they want tank dps to be like, and the current small str on vit accs looks like a band aid solution because we're mid patch. I think they work okay for now (slightly less powerful than i270 accs), we're not falling so far behind dps, and if in the future our dps falls far behind other dps jobs or even healers people will definitely come back to reddit and forums and complain, and the devs will try to come up with something again lol.
Just try to maximize what we currently have, pre 4.05 use i270 accs, post 4.05 use fending accs with str melds, and if they change it again just adapt and pick the best option.
