This felt like a track that has almost no connection to the original, which I suppose is your style but I kind of wanted to hear more of the Xtrullor-ness from that song. Now onto the remix itself... woah. Everything you've said about this track would've probably happened to me if I were a serious music producer. Thus, I'm glad you didn't give up because I definitely would. The beginning was promising as your orchestra is just incredibly homogenous. I didn't even notice it that much the first time, but I could only admire it over and over again. The build up, on the other hand, was nowhere to be found. One riser sound won't do when building up a hardcore bass drop, it needs to be much more dramatic if you want the drop to have an impact. The bass in the drop itself was... dry, and sharp (no pun intended). Not saying that I didn't like it, but together with the shallow build-up, it just didn't feel dramatic at all. With such high potential in the beginning of this song, I expected a dark contrast between the drop and the rest of the song, just like how it was done in the original. However - this is quite a big accolade right here - it was still better than many of Xtrullor's drops, both early in his "first era" and the newest ones. Despite the flaws with the bass and the atmosphere in general, the orchestral component of the drop was still top-notch, and actually made a contrast against the rest of the song. While Xtrullor's basses sound all watery, yours are a bit too dry - but it is not a big deal, and I have faith that you'll find a way to improve. Ok, my favorite part of this song actually comes after the drop, at around 3:18. The orchestra was simply beautiful, very ambiental and inspiring. The ending could have been a bit better as well, but that's just because I'm very nitpicky with atmospheric details as you can tell.
Overall, this review was written at 1am without double checking what I've said, so it's probably very chunky with information, so I'll pinpoint what I liked: choice of instruments in the orchestra, mixing & mastering of the orchestra, mixing in the drop (except for the dryness of the bass), the entire 3:18 section. What I didn't like: the buildup, lack of distinct melody (what makes it ring in your ears), some parts of the bass mix (the dryness, also not large enough to cover the panning spectrum), transitions, ending.
Despite giving the lowest rate here, this is for me a song worth remembering. Keep improving as an artist and please don't take anything I've said here personally - don't change your style if you like it just because someone said you should change it. I will share this song around and gather some more opinions on it though. :)