The small metal sheet is not universal between the two. The vanilla small metal sheet can be used for metalworking, and the hydro small metal sheet can not.

I don't know if this is intentional or not.

It does make looting for small metal sheets a bit more tedious as you have to pay very close attention so you grab the correct one.

If there are multiple small metal sheets in a container, both hydro and vanilla will be under the same "list" with a slightly different sprite to show the difference between the two.

I'd also like to add the idea of cutting metal sheets into smaller ones should give some metalworking xp. What do you think?