Agreed, that SR can be amazing, it is more of a perception. However I have been kicked from teams for playing an Ice/ or Stone/, etc. which do have serious issues (beyond perception) which need addressing.
The thing is, how does more damage and a higher damage floor help either? I've never seen tanks as needing high DPS in a team, and while I appreciate that using 100's of millions of inf and perfect slotting a tank can become godly, not everyone has the time to afford something like that. I'd be curious to see the actual numbers of characters who have invested 100 million+ into IOs compared to the character/toon population as a whole. Speaking personally, I'll likely never get to that point in the game again as I have other responsibilities in my life, etc. Basically, I think content should be balanced around a tank at 20, 30 or 40 using generic IO's. Building or setting power at levels 20, 30, 40, etc. based upon perfect slotted IO sets and bonuses will lead to nothing changing ever. That's what level 50+ content is for and should be balanced accordingly.