The way i see extracting data and presenting that to a viewer is that it gives a significant advantage. The idle villager pointer is already getting borderline.
This is a good point regarding the presenting of data. Unlike MQ/SQ it's not just simplifying an action but also doing it automatically for you. It's part of player skill and experience (beyond mechanics) just to think of checking HP (a lot easier said then done in a hectic and stressful game). This mod reminds you of that option.
The idle villager pointer is probably the closest comparison. Theoretically, you can see the idle vills without it, in practice it's very difficult to tell idle vills from working ones when you're not actively looking at them. The mod with its very noticeable exclamation mark doesn't just help you finding idles when you're looking for them, it also reminds you that you need to be looking for them. The only big difference is that it's available as a purely visual mod and thus hard to regulate.