Some thoughts from listening to the first hour (I'm not claiming any originality here, I know others here and elsewhere will have said all this):
-grime is about the live event. Literally a load of lads crammed into a little room getting it all out, like it's their only chance. This pure love exuberance is the most unique quality. Like there is obviously musicianship and innovation, but it's the live putting together of things that is what makes it really special.
- alot of the context is adolescent love games, like it's quite basic/trad at its core, it's firmly in a rock and roll sort of lineage in that way. It has that innocence of love lost and found, no doubt with a proper edge, but still. Love songs.
-the technology/kit is being misused, or not used properly. It's maybe the last music where this is the case, when it was still a bit of an effort to make stuff, you needed some special software or something, but it's so basic and simple. All for the better of course. And alot of the best tunes are so straightforward, so simple, you can him them so easily, they are very vocal based.
-the violence is there, but it's always paired with humour (trim) or some other element. This is where I feel like the difference is with drill. With drill it's like there's just the violence and not a lot else. This might be based on a misread of drill from me though, I've not really paid it much attention.