Discussion: Add ability to close tabs via double-click

HotCakeX 

Enlarging the "X" button unfortunately ends up becoming a UI band-aid, which is instead a genuine UX problem:

1. You can make the "X" button as large as can fit and it'll still never be as large as the tab's title.
2. It creates inconsistency: should all commonly clicked buttons be enlarged? In fact, most Edge complaints about the UI argue the top chrome (URL bar, tab bar) are already too large with too much padding. Likewise, many laptop displays are already smaller than what most people would ideally prefer to use (if not for the portability of 13" to 17" displays).
3. It's difficult to gauge its on/off status. "Do I have the large button or the small button?"

The double-click the tab title to close the tab feature does seem more elegant in terms of UX, but as I note initially, I actually abhor the feature on desktops and prefer it, by a large margin, on laptops.

To add onto the original post, which doesn't seem to have been addressed by the four pages here:

1. Surely, it will be an opt-in toggle, like strict tracking prevention. Have many genuinely wanted it to be the default? Making it an opt-in toggle will remove most of the risks & drawbacks completely. It should not be the default behavior simply because it'd be so different than every other browser.
2. Laptops vastly outnumber desktops these days & very few people use external mice with laptops. Thus, it's likely most Edge users' only pointing device is actually the touchpad. Closing a tab is genuinely faster and easier with a double-tap of the tab, instead of tapping the "X". The target is far larger: there is no debate whether it's easier / faster from a UX point of view. Simply how much faster and how likely / severe the risks. The speed is not simply how fast people can click, but how quickly they can reach their target. 
3. Of course, as seasoned browser users (e.g., posting in the Insider community) , we're all quite familiar with the "X" and we probably have much better pointer precision than the general population. I rarely ever misclick throughout the entire day.
4. A middle-click is not a common UX pattern for most touchpad users, often requiring a keyboard shortcut plus a tap. 
5. I would appreciate this setting not synced between systems, i.e., I genuinely dislike it on desktops (as I can double-click much faster), but I far, far prefer it on laptops (where the bottleneck is precision, not double-click speed).
6. I'd love the double-click on the title bar function to be remappable: perhaps scroll to top or usable by extensions ("Save to Pocket") for example.
7. I do know some users who wanted mouse gestures, now cancelled as a first-party feature, were looking for simpler & quicker ways to close tabs.

Users claiming "you can just middle-click" or "it's not much faster!": these are misplaced conclusions, I think, for most users. No ordinary consumer knows how to middle-click on a laptop. 

This is not, by any means, a critical feature: there are much more important shortcomings to be addressed in this browser. But, since the discussion is here, I'd be curious what is the genuine opposition to an opt-in feature for the apparent significant enough numbers who requested this.