To clarify what I am getting at:

There appears to currently be a slot on a weapon for a primary enchantment (eg: Landslide, Rune of the Fallen Crusader) and for a secondary enchantment (eg: Instant Poison, Flametongue?)

If Bliz goes the route of adding a third enchantment slot to the weapons to make room for the diversity of Lethal, Non-Lethal, Primary, then it seems to also open the door for someone to end up with a main-hand and offhand with mismatched lethal and non-lethals simply by applying poisons and then swapping weapons and applying different poisons.

This would suggest to me that instead of storing the Lethal and Non-Lethal procs on the weapons -- and all of the headaches that it would include to re-implement how weapons hold enchantments -- that they may attach the duo of poisons as buffs to the player. This would ensure that people were only permitted those two poisons unless they were willing to take the 3seconds to buff with the alternatives.

And if, following that logic, the buff will come to reside on the player rather than the items, then perhaps we might see a change in durations. Perhaps we have to apply poisons after each death, or perhaps poisons will permanently persist. Or perhaps it will be a player-oriented buff for a single hour, mimicking our current situation more closely.

Consider this: When we applied actual poisons to our actual in-game weapons, we consumed them. It was a bit of role-play, in a sense. In the future, it seems that we are skipping that realization and are just announcing our intent. The new poison buffs seem to say, "though I no longer carry poisons, I intend to poison my both of my weapons thusly," and if that's the case, why would there be a 1 hour duration on my intent? Would I not *always* thus intend, until I explicitly changed my mind? If I'm not forced to realize the act of applying a Lethal poison to two weapons, and then a Non-lethal poison to them both again, but am instead just being asked which set I'd prefer to use, then would I really need to worry about them expiring and re-applying?

We'll just have to wait and see, of course. But it is enjoyable to think about the possibilities.