My suggestion is go for it! This is your hobby do whatever you want! Dark Eldar aren't the only beings who appreciate originality I think your idea is brilliant! Just be aware of the fact that from the most outrageously competitive perspective, you are making it harder to take advantage of terrain the larger the vehicle you bring to the tabletop. Unless you seriously pair the raider down it is going to be significantly larger than your average Starweaver. I don't think most players will mind playing against it though so if you're not that competitive don't think twice.
My 8th edition fandex is complete enough for appraisal (note that I completed it before any previews had been released) . I'm sure there are inconsistencies, please let me know where they lie as you find them. Thank you! Click here for fandex