There isn't much contrast to show the difference in intensity between kiai and non-kiai kickslider patterns. 00:42:644 (3,4,5,1,2,3,4,5,1,2,3,4,1) for example is similar in difficulty to 00:38:963 (1,2,3,4,1,2,3,4,1) and 01:06:478 (6,7,8,1,2,3,4,5,6,7). I recognize the 1.2 > 1.3 SV difference, but the visual change this brings is minimal and since these sliders aren't meant to be followed anyways, there is negligible effect on gameplay. Would be nice to either make kiais harder, or downtime easier for clearer contrast.
There are a number of circles placed on nothing during Kiais. RC guidelines discourage clicked rhythms at moments without a distinct sound. 00:43:288 (1) // 00:44:392 (2) // 00:46:233 (1) // 00:48:625 (5) etc