I think someone who is muscially trained or can play a musical instrument will make better electronic arrangements even in non-melodic genres because when you can actually play music you have better feel for things like call-response, tension-release, climax etc., also you can drop an occasional key change or a small melodic line to make things more interesting.
That's may be why electronic music becomes less exciting as a whole despite all the cool software we have in our disposal, younger folks never saw anything but a DAW in their lives and they learn various production tricks from Youtube having zero musical backrgound.
It's a kind of polarizing topic whether psytrance needs melodies, some people cosider psytrance should sound challening and melodies, especially of more accessible, pleasant sounding kind, should be avoided because they would make it more cheesy and less psy. I, for one, think that a great melody can turn an otherwise forgettable track into a masterpiece. I listen to various kinds of psy but 95% of my favourite tracks contain at least some melodic parts and most of them have some elaborated melodic work.