Originally Posted by
fushio
As opposed to other professions, engineering does not give passive bonuses that are always active, it give tools, skills that must be used and managed. If you choose engineering over other professions, you are giving up stat bonuses the other profession provide in exchange for these tools, and even then, you must use your head to make them useful, as opposed to other profs "equip and forget" stats. As you say, there is no reason to only make one profession viable, but is also true that there is no reason to make a specific profession non-viable, just because its perk does not works in the same way as the other professions do.
My point in the other post was that each tool engineering provides (and the two potions) is a (bad) duplicate or a very limited variation of a tool already provided by a class or race, and not in any way an advantage exclusive to engineers (or people that are willing to farm consumables for pvp).
Maybe I forgot to completely explain myself in my previous post, so I will elaborate it now:
In arenas there is a limitation to certain abilities and objects. This limitation is based in the nature of arenas, short combats between two team of players with few members. In these high-pressure environment, certain advantages provided by abilities and items become hard to balance, mainly because that extra power, extra health or extra speed could be the difference between survival and death. And in arena, death is game over.
In BGs, death is less a penalty than a hindrance. You die, and 30 seconds after that (or less) you will return to the match. Any advantage your slayer gained with the use of items, tinkers of whatever cooldown he or she blowed will be probably be in CD the next time he or she needs it. That is the nature of the game.
In summary, even while I must admit that these tools give an advantage in a small scale combat, in a BG, were victory is achieved by objectives, and individual combat prowess and personal win ratio is much less important, the advantage provided by items and tinkers decreases greatly, and, in the same way, so do the reasons to ban their use. This is my reason to oppose to the application of arena restrictions to rated BGs.