Hey there all. Total newbie here. After reading a fair chunk of comments on the forum here I think one relatively easy change would be for there to be glycerin based cartridges/juice instead of the PG product available now. I'm not familiar with nicotine's solubility in glycerin so there may be barriers there but I would think that switching away from PG to Glycerin would make it so that the only potentially hazardous chemical in the vapor is the nicotine itself.
Just my $.02
Just my $.02