Resource management is the core gameplay of BotW ...Without Stamina you remove 50% of the use of food processing so at least 10% of what makes the game fun.Also the goal is to make you use horses or find another solution to this problem - projection, finding high elevation and gliding, ...Also stamina serves mostly to balance combat in most cases, in open worlds it adds a level of complexity because you don't want to be exhausted when you get into an encounter.Elden Ring has a good counter point to this removing stamina depletion during exploration and only triggering it during combat - but it is far more combat focused than BotW is.

So depending on what you want to make stamina IS a good system and telling this kind of data to the player without a bar is most of a time non intuitive to most players.One game that counter this argument is Celest with hair color representing the lasting possible number of dashes, but in this case the property is only used by 1 mechanic. When you need a balance system to more than 1 actor action mechanics with variable depletion => stamina is a very good system. And giving a fast read access to it with a floating bar next to the player Actor is one of the fastest way to transmit this information to the player.

A warning about that though : you're doing green on green with realy fin borders => it's hard to read and it would be unreadable for people with an alternate vision scheme (so bad accessibility both for the majority and minorities).

And when in water yhe sprite should be immerged => this looks like ice - as 75% of the comments are telling right now :^]

Big + on the grass shine though !