What could be the best mod for you ? (your expectations)
My first idea is a web app (drop in file, a bit like octoprint) hosted on a little pcDuino and the MrBeam shield. if we are able to keep the PSU/laserdriver (MYJG40W) the mod could stay in a reasonable price to match the K40 entry level price tag.
in fact the ideal solution I could see for now, could be simply send a pdf where the content should be interpreted, like in this example (final format to be created):
a red hairline shape mean a cut,
a gray level image will be a raster.
all the rest will be ignored. (limited material loss)
Cutting and rastering could be mixed in the same job.
The advantage of this solution is, you are OS/Software free. the K40 is A4 landscape size so pdf make full sense.
No more battle with origin, positive/negative, layers or task/job and other complications like into MoshiDraw. (what a loss of time and material ! bloody Moshidraw. )
http://shop.mr-beam.org/product/mr-beam-shield
http://www.pcduino.com/pcduino-v3/
