These objects don't have that problem, so why complicate their capture? In my opinion, snow in the Factories is the ideal solution. And even if Laura can capture them, there's nothing particularly terrible about it. The main thing is that any hero at ninth speed shouldn't be able to capture them, as is happening now.
In the Necropolises, either there should always be dirt, or the zombies should be replaced with upgraded ones.
"Совесть - она либо есть, либо её нет" (с) RedWhait HP