I'm not seeing how you see elements of 
house and techno in d&b.
Reggae + D&B were made for eachother.  Pretty much spawned the MC heavy Jungle scene.
Hip hip is more like a brother than distant cousin to D&B.  Simple math lets you mix seamlessly between the two given hip-hops typical bpm range anywhere from 80-100.
Hence-why you see so many MC's spittin over it or a guy like Aphrodite remixing "Passin Me By" and shyt like that.
If you're talking the soundscape behind the structure of D&B as the "elements" ie the spacy, dark, quirky and atmospheric undertones-then I'll buy that.  But D&B in it's purest from, is just that.  Strictly a breakbeat.
And that's why you'll see Mixmaster Mike, Craze, Rob Swift and all them hip hop dudes spin and incorporate it in their live sets.  Every time I've seen them spin.
I did that shyt all the time too.
That's just my viewpoint coming from a DJ tho 
 
But this shyt they're passing off as "EDM" now is 

It's pop and club shyt that's easy to dance to and sing along with if you're one of those types of heauxs 

But none of it is D&B.