Mankind still is in need of many melting points, properly measured by authentic experiment. It's incredible how few we have below -5°C: for alkanes there are 50-100, nearly all coming from 1 (one) Naca project around 1950.
All the rest is estimated by software and is very wrong, like 50K too warm or too cold. Worse: some thinking and software training runs on wrong data. Theories work badly up to now and have a too small experimental set to make progress.
For rocket fuels, I need branched alkanes and a few strained ones, plus saturated tertiary amines. Other people have other needs.
So a project could be: take 100 branched alkanes, still unmeasured (the Naca project separated them from oil distillates), around C10 to C20. Take liquid nitrogen and a thermometer. Purify, freeze, measure, publish.
Or do it for amines. Get a bunch from Huntsman, Koei or an other. Put methyl groups everywhere, separate, measure. Permethylated propylamines look interesting and their melting point isn't in the datasheets.