I propose that correct application of Ayawaska from a dharma perspective can actually provide first hand experience and understanding of the Dying process while still alive in incarnation. To think this falls out of line of any lineage is fine, but to think it falls out of line of Dharma alltogether is a mistake.
How do you know what does anything "from a Dharma perspective"? Do you have a teacher you've asked about this, a Sangha, do you regularly meditate, do you study texts?
If all you've got is an interest in Buddhism, no teacher, no mediation practice outside the trips, and a vested interest in convincing yourself that drugs and Dharma fit, I suggest you might not be capable of figuring how things look "from a Dharma perspective" because you've never even bothered with Dharma independently of all the visions, attempted bardo trips etc. I don't know if that's Dharma practice, it seems more like just trying to fold a little of of what you like about Dharma into what you are already doing.
Also FYI there is something you do every day that many teachers says indicates what your bardo experience will be like - sleep. You don't need anything for the practice, sleep is like a little death that happens every day.
but it is within my karma to pursue the merits of this medicine.
None of us can see our own Karma that clearly - that's why it's important to examine motivations. You keep talking about what Ayawasca "is"..it doesn't matter what it is, it matter what your relationship to it is, and whether that has anything to do with Buddhadharma. I don't know the answer, but so far in the thread you are putting forth alot of theory about the place of hallucinogens within Dharma that you don't seem qualified to make, especially as relatively new person to Buddhism...woudln't it be wiser to just start a practice free of hallucinogens first, then make a decision about this later on?
Meditating on the karmic roles and connections between the plant realm and the interconnected medicinal properties present in nature might be a more accessible route in seeing where i am trying to steer my perspective from.
Again, Karma is something very hard to see for beings in samsara (like us), so part of practice could be said to begin with not assuming you are actually capable of making sound judgements about things like this.
"Just as a lotus does not grow out of a well-levelled soil but from the mire, in the same way the awakening mind
is not born in the hearts of disciples in whom the moisture of attachment has dried up. It grows instead in the hearts of ordinary sentient beings who possess in full the fetters of bondage." -Se Chilbu Choki Gyaltsen