Equalizer new features

Got a great idea for the future of LMMS? Post it here.
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I think a good feature for the LMMS equalizer would be a "headphones button" like in the Ableton EQ so that you can listen to the difference that your eq is making (would be great for mixing). Here is a video where the headphones icon is turned on around 10:25 https://www.youtube.com/watch?v=SwZDTpLk514&t=629s

It seems like a better spectrum analyser is being developed https://github.com/LMMS/lmms/pull/5098 ! Maybe it would be useful to combine the features of the equalizer and spectrum analyser into one plugin so that both features can be used in the same window? Then the plugin could be renamed to "equaliser and spectrum analyser" for example.
Your first idea is great, and very easy to program. I'll go ahead and add an Audition toggle to the LMMS EQ right now! :)