Yeah this is different, it`s good to spread your wings.

Overall the mix feels a little wimpish and flat. Everything seems to be mixed to almost the same level, and the majority of sounds seem to live within a restricted bandwidth.
When the synth at 3:45 comes it, it`s as if it comes from "outside" the mix. It doesn`t fit in with the spacial shape you have made, and sounds larger than everything else.

I think the best way to address this is to spread the sounds out more widely in the frequency spectrum, and also maybe use some transient shapers and compression to add some livelyness to some of the sounds.

Overall I think the mix could sound more open and airy.