I often find myself duplicating layers, when I want to play around with different symbologies or definition queries without messing up what I've already got. Right now, the only method I can find for duplicating layers like this in Pro is the following:
- Right-click the layer in the TOC
- Click "Copy"
- Right-click the map in the TOC
- Click "Paste"
- Click and drag the layer to move it where you need it
ArcMap had a much faster approach:
- Hold down Ctrl
- Click the layer in the TOC and drag it where you want the duplicate
Not only is this much faster and smoother, but it also lets you drop your newly-duplicated layer exactly where you want it, instead of automatically inserting it at the top of the TOC. Yes, it's a fairly minor change, but it does result in significantly fewer clicks, which is something Pro is in desperate need of throughout its interface.