Too flat and strict for me.

Even if this loop is short, i got almost bored at the first listening.
You don't have any melodical line and drums can't entertain that long or they must be really really good. Here, they are not badly composed, but it sounds they are more an accompagnment than a true principal melody. The density and the superposition of many elements of drums can't change that.

So, ok, for the ascension, with some new entrances each two repetitions (each 7 second if you prefer), but it still doesn't have a lot of interest, according to me, particularly because it's too flat and cause the construction is too rigid.
And making all those instruments coming suddenly produces its effect, but did you think about some transitions, bringing the new cell after a roll on the drum or something like that ?

So I'd say, it's not bad, but not super good either.