Why these warlock changes?

Since my account is running out in 4 days and no one else has asked direct questions I would like to know before I go.

1) Why was molten core changed given it ends up being a PVE dps loss and a major PVP damage loss due to searing pain, immolate, and immolation aura being the primary damage source?

2) Why do locks have to glyph for haste and why do warlocks have to glyph shadowflame in order to make it functional. Why are these things not baseline yet?

3) Why was destro lock burst the only thing targeted for PVP balancing given the current domination of melee and healers?

4) Why was scourge strike changed to make it more effective against cloth and less effective against plate again given the current domination of melee+healers?

5) Why do I still have to reapply firestone every arena match?

6) Why am I still being stunned for a 4th and a 5th time in a 15 sec time span while being chained with siliences?

7) Why aren't there more anti-melee bubbles in the game?

8) Why is every caster in the game forced to "tank" in PVP as a primary defense strat(frost being the exception)?

9) THIS ONES IMPORTANT: Why when melee get bursted in arena with no stamina/resilience gems or enchants is your solution to nerf caster damage instead of telling them to properly prepare for PVP?

I got more questions but I'm positive "In the expansion" will be the answer.