My feedback was it seemed like it was interesting to make, but for me at least not really interesting to solve.
It felt more like solving two crosswords than a single combined one.
Places where lots letters are shared between the two make it interesting, but they're weren't many. Sharing a single vowel 'e' isn't too interesting. Otherwise the just share the length which I already know the length for a crossword clue.
It seems like there is a cool idea in there and keep working on it, it just isn't there for me yet.
It's fun, but I have some pointers.
1. Try to follow NYT's cluing rules, like plural clues always have plural answers. I was tripped up by "Bark pieces soaked before scattering over coals (8)" having the answer WOODCHIP.
2. It's very difficult. I solve NYT pretty handily 7 days a week, and difficult crosswords in Swedish too, but I ended up using 21 hints, and not only because I rushed. The lack of crosses makes it a lot harder to get a lock on the grid.
3. There was some questionable cluing in general, like "Shredded cabbage side at every British barbecue (8)" for COLESLAW, which I would not consider a particularly British side, and "Shallow inflatable pool beside the barbecue (8)" for PADDLING. Omitting the noun for that type of compounded adjective-noun word is fine I guess but felt clunky.
I like the gimmick itself though!
This would be a perfect entry for https://hnarcade.com