I will also add up that the player shouldn't expect an SV change there due to the nature of the diff and its AR. In this level (and, thanks to the AR), they will be able to indentify that the sliders have the same shape / length fast enough.
only one question, 00:19:833 (1,1,1) - 00:20:924 (1,1,1) - 00:24:197 (1,1,1) - 00:27:469 (1,1,1) - 01:14:378 (1,1,1) - I suggest you use only one combo color instead of new combo abuse. it's so tricky that ppl might regard them as if they have individual slider velocity. I understand your concern about the NC spam but if you notice carefully I only used them for objects that have 1/4 space in the timeline instead of 1/2. I spammed NCs to them to distinguish their rhythms. The first ones might not be that of an issue, as they overlap, but if we take 00:27:469 (1,1,1) - for example the player could read them as the other sliders that have 1/2 space in the timeline. tl;dr the NC spam is only there to warn the player that the rhythm changes.