Every time I look at my P.nexus plants lately I really appreciate the value of them but I can't help thinking that the job has only been half done.
To my way of thinking if the plant had been back crossed with the viridis the full potential of the viridis could be attained as far as alkaloids go. If it had the cold tolerance of a carth then it would be a much desired plant.
If two separate crosses were done from the same parents with one line being bread for size & cold tolerance and another line bred specifically for alkaloid content and the two lines crossed when the traits were fixed a plant could be produced that could have enormous potential.
Most likely two separate lines would not need to be started, it's just that two separate lines would make it easier to fix specific traits and not rely on as much luck.
I'd love to do this myself, but I don't have an environment that a viridis will thrive in so it's all just a pie in the sky really.