[leggomylibro]

Armchair opinion, probably gene editing. Not in people or animals, but I'd put money on it becoming "easy" in plants before much longer, as CRISPR gets more accurate and people apply it to already-understood micropropagation cloning strategies.

There was a startup trying to make autoluminescent plants with jellyfish genes before CRISPR even existed, just using ordinary plasmid creation and transfection techniques.[1] That particular effort failed commercially, but I believe they recently reincorporated as 'GLEAUX'.

Anyways, Biology is messy and difficult, but I really think that we are getting to a reasonably solid understanding of genetically engineering plants. And once someone turns that into a '1, 2, 3' process...well I don't think you need more than a 5-figure investment for equipment/space.

[1]: http://journals.plos.org/plosone/article?id=10.1371/journal....