Refreshing your Mage Bomb can actually net you a missiles proc or two now which is fairly handy on fights with 3+ targets.
I don't have the same animosity towards the bomb tier as you do but if in 6.0 they decided to make Fire the only DoT spec again (or also make Frost Bomb baseline for Frost) then I wouldn't cry either, the sight of a cloud of Nether Tempest missiles is a beautiful one but I'd take more interesting AOE over that any day.
I honestly think that their dedication to giving each tier a Fire/Frost/Arcane choice was a bit of a mistake in terms of flavour, I don't think any other class does that >_>