Insanely useful, or insanely broken? Honestly I can't tell.
Very useful patch! I probably will find myself using this.
My only question is will the music reset to normal tempo speed if you collect the midpoint after you've hit 99 seconds? If not, that might be slightly awkward but idk what you'd do to fix that.
Want progress on 100 Rooms of Enemies: The Nightmare Edition? Go
here to see.
(rip my other userbars momentarily)