In an ideal world, I would like to use Helix Stadium like this: 1'5 paths for guitar and 1/2 path for vocals.
For vocals, I'd need vocal harmonizer with formants, with 1 to 4 voices, and sometimes reverb, delay, distortion and some modulation block.
For guitar, I'd love to be able to squeeze Rev Gen Red, US Super Nrm and Brit 2203, together with poly pitch, shimmer, particle reverb, some fuzz, Scream 808, compressor, some modulation blocks and maybe sometimes harmonizer.
I would be fine if I had to split my songs presets into 2 or 3, as I'm currently doing, but as I said, in an ideal world, I would love to be able to have everything in a single preset.
And I think I read that no matter if you put amps on path 1 or 2, that DSP will be distributed along both paths. That's just brilliant, because sometimes I've had to move a second amp+cab to another path, and blocks ordering was a headache.
I think I could save some DSP by using just amps blocks and then a single cab block, but I would be using one more block space and sometimes I need that space for another block.
Now that Helix Stadium has way more blocks spaces, I will totally use "N" amps + 1 cab, in the hope that it helps having some more DSP.
The greatest addition would be being able to have several amps in the same block space (that doesn't sound crazy; just reserve the max DSP from the selected amps), and seamlessly switching from one to another (that's the one I think it's really difficult). I think I saw someone saying Fractal does this. It would be really convenient.