Hey!
I was trying to create a tool that shows the scrap reward amounts on article pages so that a user would not need to open another page to see the actual numbers.
Take a look at the release candidate examples ("Images as tooltips (dev:WdsTooltips.js)" section).
In terms of the former wide-spread formatting and styling on the wiki, a simple solution would have been to link the low/medium/high word to a corresponding page or section (and, preferably, apply some font color formatting to prevent the links visual "merging" due to being of the default blue color). However, that changes the user focus to a whole different page.
As you noticed, I am fond of using tooltips. While it is absolutely possible to get away without them, they help show the information without the need to scroll down and look for (sub-)notes or clicking on the references links which usually change the focus to another part of the page. Additionally, this WdsTooltips are stated to be fully compatible with mobile devices (though, I didn't test it myself), so it might be of use for phone/tablet users who watch streams or VODs and consult the wiki (though it has less of an impact on streamers, who can open a new tab in a PC browser seamlessly).
Let me know what you think about the release candidate examples and if you have anything against implementing these tooltips across all events pages.