[Enhancement] Target specific element in selector results that match more than one

[senocular]

Sometimes you have a selector which results in multiple element matches but only want one of those elements - not the first which, by default, is the one always used. CSS does have nth pseudo-classes, but they're limited in what they can do. Xpath is better, supporting array access syntax (//<path>[0]) for targeting elements like this, but sometimes it doesn't always cut it, such as when using page objects with @-element references. In that case, the index would be fixed in the element definition when maybe you want to reuse that same reference to target multiple elements in that query ([0], [1], etc.).

browser.setValue('input', 'username'); // how to target 2nd input element?
page.click('@button'); // or the 3rd button?

Being able to specifically target an element by an index within a resulting elements query would be nice.