Kiai has tons of 1/1 patterns all over the place. Definitely can fill in some rhythms to make it stand out more. It's not hard to play it's just very repetitive. Places I feel and suggest that can add a note are 00:58:265 (4) -
and can also be using 3/2 rhythms such as 00:59:039 (7,1) - https://i.imgur.com/8v6gzr1.png
00:52:854 (1,2,3,4,5,6) - Song gradually progresses but is kept the same way with no buildup. Little extra spacing after (3) would make this pattern stand out more.
00:50:379 (1,2,3,4,5) - How your map is structured already makes this part stand out quite heavily. It's randomly thrown in. Feels better if the sliders were parallels to keep the linear aspect you have.
00:40:018 (6) - I suggest to NC just to remove any mistakes of hitting this early for players
00:26:874 (3,4) - Spacing relatively similar to 00:24:400 (3,4) - while the previous pattern had more emphasis on (4)
I would suggest to space closer on the 2nd time around would be better music wise
Oh I introduced it very early at 00:29:596 (5,6) - no real reason for me to change no real purpose behind them its just nice to play adds more variety to just stacking them