This is basically how I EQ the Variations to give it faster transients: https://i.imgur.com/E2tHn2C.jpg

The main problem with these EST tribrids that gives them their wispy treble character and slightly smeared transients is that the upper treble rise/fall past 10 kHz isn't properly present. If you listen to cymbals on them, you can easily hear that the shimmer lasts for too long and starts bleeding into other cymbal strikes because of that treble overextension. The slight dip at 10 kHz gives a bit of extra depth (and by extension, better layering), with the 5 kHz notch being necessary to make sure the imaging remains coherent.