I think it's perfectly legitimate to discuss the ramifications of using these gems within the bracket, in relation to the current issues caused by burst damage, resistances, and lack of other tools to balance those things. I wouldn't fault anyone for deciding to use this exploit to better their characters in the meantime while we wait for action from Blizzard on this matter.
However, I can't help but bring up future plans that will do wonders towards fixing the issues we have at low levels in general. In MoP, resistances and spell pen are both being removed from the game, while all characters will have 30% base resilience. At this point, using the gem exploit is a band aid fix to hold players over until the exploit gets fixed between now and when 5.0 rolls out.
Given the time frame of the press release and the end of the average end of end game activity in the past, we might very well see 5.0 between June/August. Of course, it can't come soon enough, but that's just the nature of things.
Personally, as much as I would love to utilize the gem exploit to my benefit, I CBF to participate in that activity, knowing a permanent fix is coming soon.
Good luck to the rest of you.