Very strange that you got a missing abstraction (8TapPDelay~). Just to ensure myself i'm not going completely bonkers, I've downloaded the zip and checked it. The delay seems to be in there... A pitty you missed it, because it adds a lot of atmosphere...
I know that the osc-sliders do crazy stuff in the lower regions, but when they go all the way up they generate a very smooth oscillator (with some fm-like sparkle). That's mainly the sound i've created it for. Was already thinking of making it 4-voice polyphonic (just to keep cpu usage reasonable).
UI-wise, I try to keep things rather small (e.g. by just using one character) not with the purpose to make things cryptic, but because i want things to be as compact as possible. That way i can open around 6 patches (2 of these, a beat machine, my enhanced laala sampler, and a few others) and play them all together.
The preset thing is certainly something i'm going to look at.
Thanks for checking it out,
Domien