I would agree if the target demographic of FL’s market was consumers/hobbyists, people who just want to print something and have no CAD skills. But FL’s target is “technical” users, people who are using the printers to prototype or make functional models of products (or dental, which is it’s own separate “vertically integrated” market segment) and by definition have the tools and knowledge to hollow or vent in the same program they’re using for modelling. Investing in the implementation of complex functionality that their target market doesn’t necessarily need or want would IMO be a poor decision on FL’s part.