colin, i'm not sure if I agree with your eqing decisions in the beginning of the piece... I really liked those guitars brighter, as in the earlier version. In fact, everything seems to be a lot muddier now. It sounds too low-fi, too compressed overall. In general try not to compress/eq the whole mix when the issue is really in a specific instrument. I'm sure part of that is probably from having to compress at a low bitrate too. Also, i hear you boosted the lows of the kick but I'm starting to think now it may be a little too much. See if you can find a better balance between the attack of the kick and the resonance of the kick. Still not too crazy about the violin sample, but i think it sounds better now.
Your mix definitely sounds fuller now, but I do think it's overcompressed. Especially in the drums, i'm hearing a lot of volume fluctuations (especially in the cymbals)
I still love your arrangement! unfortunately i don't really remember the source, but I think you've got the right ratio of original and source content. Just widen your sonic pallet, eq the bright instruments and the dark instruments respectively, and don't compress so much. Right now I'm hearing too much low, too much compression.