I've been using Firefox (fx) on an off for the past few days, was wondering if
it woudl be possible to implement the following

Search box key shortcut
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fx uses CTRL+J to allow quick access to the search box. I note that Epiphany
doesn't use that shortcut combination for anything so perhaps it could be used
to provide quick access for the search box.

Recently searched terms
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I wonder if it would be useful for the user if the search box had a feature
similar to that of the URL bar, where a drop down list appears that contains a
list of search terms that match up with what the user is currently typing.