Hello Tom,
Yeah, you can use a custom shortcut for any menu item in any app.
Just go to System Preferences > Keyboard Shortcuts > App Shortcuts and add the one you want. You can learn more details about the process in this support article on Apple’s site.
I’m sorry you feel this is a step back in your productivity. Now, instead of having to enter the bitmap edition mode and double-click, you can select the bitmap and use the new tool directly, either via a shortcut, the menu, or the Command Bar.
We believe in centralizing tools in the menus so you can have access through the menus themselves, custom shortcuts, or the Command Bar. I encourage you to try and get used to it for a bit so you can see the benefits we’re seeing as well. Give it a try and let us know!
In any case, and please make no mistake, you’re feedback is noted, and that’s the main reason why we’re offering this forum in the first place, so please keep the feedback coming, we’re more than happy to listen to you 