Hi!
Yes, you could implement this yourself using Groovy (custom component), Java (plugin for LoadUI or extend LoadUI) or manually query the H2 database (it's not password protected).
I definitely understand your point, but we can't make a version for every customer. It's like cable TV or Photoshop (and a lot of other things) -- you pay for a package of channels/features, but you can't cherry pick.
We made raw data export a Pro feature since our data and intuition told us that it's a feature used by professionals. When you are not simply designing and running and analyzing the results of load tests -- but also exporting the raw results and analyze them in external tools -- then we think that you're a professional user that should use LoadUI Pro. Keep in mind that LoadUI gives you a lot of stuff for free that most tools don't to begin with.
Regards
Henrik O
Product Owner for LoadUI