good arrangement, lots of creative ideas and variation from section to section, and the cameos were well-placed and executed. i really like the trippy bit at the end
the sampled instruments (esp. strings) are kinda weak and the sequencing isn't very humanistic in terms of rhythm and velocity. the mixing is a little flat too - i could go for some more low frequencies, as well as some more highs on some of the synths in the back half.
as you've said, production is a bit off, but the arrangement is strong. certainly an enjoyable listen, but i'd love to hear those samples beefed up a little