Currently that's not possible with 7+ Taskbar Tweaker. I tried to implement this once, but it turned out clumsy and confusing.

That's possible with 7+ Taskbar Numberer. See here:

https://superuser.com/a/916838

What's the issue? Please provide more information.

Please check if that's the bug you're having:

https://tweaker.userecho.com/topics/116-thumbnails-not-displaying/#comment-779

Does the issue happen only when 7+ Taskbar Tweaker is running? What do you mean by "don't respond"? Which options are you using with 7+ Taskbar Tweaker?

It's not really related to the taskbar, so it's unlikely to be implemented by 7+ Taskbar Tweaker.

That's already possible with the Mouse Button Control advanced options. See the answer here. Refer to the help file, and let me know if you need help with it.

Please provide more details. Are you seeing any error message?

What is your version of 7+ Taskbar Tweaker? Also, are you seeing any error messages?

Check out 7+ Taskbar Tweaker v5.3.0.1 beta.