Density is pretty similar allover here. I think you could improve it slightly by giving the calm parts (00:33:524)a little less density. 00:38:178 (6) - for example the last beat is not following the synths here which you're mainly mapping. This feels slightly forced compared with 00:39:507 (3) - which make much more sense. So I'd suggest to remove the reversal for 00:38:178 (6) - 00:43:496 (6) - and stick to 1/2 slider with a contrast gap here to improve the contrast between the parts a bit more :)
Does NOT apply for 01:52:637 (6) - 01:57:956 (6) - since you are giving a nice buildup push with the hitsounding here :)