This reminds me of Brian Eno's album 'Music for Airports'. This is quite an interesting article on how it was made, and if you scroll down there are some diagrams for the music which are weirdly similar to your own.
Hi there, regarding the 'un-named orchestral suite', I think the composition itself is really powerful, with some great use of texture to ramp up the emotion.
With that in mind, I think it could be improved a lot with some better production / orchestral samples. Some EQ'ing could really lift the piece, as most of the instruments seem to be around the same mid-low frequency range. You could try taking reducing the middle frequencies in your low strings for example, leaving the violins to ring through a lot clearer. Try to make each instrument occupy its own frequency 'niche'. I have not mastered this yet but having read around the internet this seems to be the way to go. Also, around the 1 minute mark there is some quite heavy clipping, try to reduce the volume slightly to reduce the audible buzzing sound. And one last thing - try panning the instruments a bit more. I've listened to some of your other pieces, where you have panned effectively, and I think some more of that could really help the orchestral suite.
Having said that, I genuinely did enjoy the track, and the actual composition itself seemed top-notch - I'm assuming you had some strong classical training
Good mix of genres and styles, and some really nice tracks. The Japanese style track is really convincing, although I feel the guitar on the fourth track could use some more punch and impact. I think you might be a bit heavy-handed on the reverb as well, particularly in the 2nd last track. Overall though the portfolio is really decent, and you seem like you've got a good grasp on quite a lot of genres.
In terms of pacing, from what I have read around this forum 5 minutes could be a bit too long - you might want to consider shortening the segments to their most compelling moments and shrink the demo down to about 2-3 minutes total.
Another option is some games such as Left 4 Dead 2 have all of their sound folders open and can be replaced with any other .wav file (providing it's the same length), theoretically allowing you to rescore the entire game. It's great because you can compose a piece, and then experience it in game as an interactive piece of music.
Following that you can release your score to the Steam Workshop as a mod for people to download.
If anyone knows any other games with replaceable sound files I'd love to know!