As demonstrated in the RMT forum, importables make life much easier, allowing us to quickly build someone else's team. As someone who surfs through smogon's analyses whenever building a team, I noticed how much time and effort would be saved if the importables were included on the analyses. I admit, I do find team building as is to be a little tedious (although PS definitely makes life easier). Now I have no idea about what the programming implications of this would be (effort, time). Other than that however, it seems to be a simple yet effective way to improve the team building experience for everyone.