I believe he was referring to both duration and number of adaptations. As for the former, I've already given my opinion while for the latter, I think this doesn't seem like that much of an issue. I doubt their would be scenario that would require more that three adaptations, and I think that's stretching it. There could be certain situations that would require more, but I just can't think of any without exaggerating it.
As for your question regarding someone who is able to counter an adaptation, then good for them. I think that's more of a merit to that person instead of a weakness. Lastly, I don't see why all the adaptations would need weaknesses.
I think Jinxer was more focused on me having sufficient weaknesses/requirements/limits; uncontrollable since it requires the presence of a threat and the abilities being temporary. Like I mentioned, compared to the ability I'm suggesting, I don't think some of the other characters have that many weaknesses and limitations given the power they've chosen. I'm just hoping for some impartiality.
I appreciate your suggestions Jinxer. For the time limit, I think sustaining the ability until the threat is no longer present is a good enough duration since I doubt certain threats last that long. Getting hit by a car, stabbed, or poisoned would require abilities that would only last for a few moments. Temporarily phasing through a car, skin hardens the moment one is about to get stabbed, or developing some sort of immunity for the specific type of poison; several seconds would suffice. However, in the event a threat lasts longer than expected, I'll moderate the duration to not completely counter the situations thrown at me. Would that suffice?
The idea of further developing this ability further is quite interesting and if you have any more suggestions on how to control the initial manifestations of this ability, I'm all ears.