An interesting thread derailment occurred in the Character Creation and Critique forum concerning Negative Qualities. A poster advocated taking a Moderate Allergy to Seafood for 15 relatively cheap karma, believing it to be easily avoidable. After pointing out that, along with soy, seafood-based substitutes (krill, seaweed, etc) are heavily used to suplement the diets of most regular people in the Shadowrun future, the question turned to the targeting of Negative Qualities by GMs.
I think I have a good feel for the optimizer perspective, I wanted to know how GMs would handle it. This applies really to all NQs, but the topic surrounded the Allergy NQ in particular.
From my own perspective, I think NQs like Allergy require the GM to consider how the allergens fit into their game. It seems like this would be a requirement in the first place as the GM would need to determine whether a particular allergen was Common or Uncommon in their setting. Based on that determination, they would need to then determine how that prevalence impacts their game.
For Uncommon allergens, I think they should really only be introduced by the GM specifically to target the player and be used rather sparingly, once every few runs perhaps. They are supposed to be uncommon, after all.
For Common allergens, I like to tie things to existing rules, so I think I would sit down and come up with a way to determine if/when the reaction is triggered. Picking up a few of the Common Allergens listed, I'd go with something like the following:
Food-based Allergens (Seafood/Soy/Wheat): To normally avoid triggering the reaction, requires paying a premium on their lifestyle cost, probably something similar to how Symbiotes bioware is handled. High+ Lifestyle avoids the reaction entirely in normal circumstances. With that said, the GM should probably target it once in a while even if the above precautions are taken (as they can't be 100% fool-proof).
WIFI Sensitivity: The reaction is triggered whenever the character is in a Spam Zone with a rating of 2 or higher.
I could also see all of the above targeted through a daily Edge roll, possibly risking exposure on no hits.
Those are just a few ideas off the cuff. I'd love to know how other GMs felt about this and how they handle the targeting of NQs. The discussion isn't necessarily restricted to Allergen. I'd love to hear to what degree GMs feel they should target NQs (for instance, the rigger who never leaves the van taking Uncouth).
TIA!