The photo isn't the best example but I've noticed—just in the beta—that the paths on the map tend to cross over each other at least once per run. I already find it hard to tell what I have selected in the game in general so I have to keep flipping between selections until I figure it out.
This is probably more of an issue for me because I'm playing with a controller/on the Steam Deck (i.e. there's no mouse cursor to make my selection more obvious), but since you've got the game on the Switch as well I imagine I'm not the only one who struggles with figuring out what's selected.
Although I'm bringing up the path selection specifically, I typically have to double check what's selected in pretty much every part of the game (with the exception of choosing a card in-hand—that's not a problem). It would be immensely helpful if you could add an outline or glow to the selected item or UI element. I'm sure this would bother some people so it'd probably make sense to make it optional. (The unit targets make things more confusing to me, so I appreciate that there's a toggle for it and you communicated that very clearly in the update.) Also, it can be really hard to see if a card has a crown on it sometimes (if it's not in the top row).
I absolutely love Wildfrost and I play it every day so I thought I'd get used to the subtle selections...but after over 250 hours playing this game I still make several mistakes during every run. 😛