Hi,

Thanks for the feedback.
I don't plan to implement the feature in the tweaker, because, well, it's 7+ Taskbar Tweaker. Having said that, there are programs which are designed to solve this issue. One that I'm aware of is WizMouse. I haven't used it myself, but as far as I know, it works as expected, and doesn't conflict with 7+ Taskbar Tweaker.

There's the "Drag within/between groups using right mouse button" option, which allows to move windows between groups.

You can hold Shift to get the other menu, as mentioned in the help file. For more customization, you can use the Mouse Button Control advanced options. See the help file for more details.

That's not possible. Please read the FAQ here.
As for CPU usage, it's nearly zero. The only thing the tweaker does in the background is checking for updates every 24 hours, if the option is enabled. Other than that, it's completely idle (except when you open the GUI or restart explorer).

Have you enabled the relevant option?

Does ... mean that previews will always show when you hover an application in the taskbar?

It means that the hover settings aren't affected by the disable_items_drag advanced option. If previews appear without it, they should also appear with the option.

What is the issue here? This option modifies the left click action, not the right click action.

It's possible with 7+ Taskbar Tweaker v5.0 using the Mouse Button Control advanced options, although it's not too straightforward.
Let's assume that we want to launch explorer every time we hold Ctrl and left-click the taskbar. Here's how it can be done:

• Add the shortcut to the Advanced Options editor, and set the data to an unassigned value, e.g. 1000.
  
• Hold Ctrl and left-click the taskbar (or use the click that you have set). If it was done correctly, Notepad will be launched.
• Open regedit and navigate to HKEY_CURRENT_USER\SOFTWARE\7 Taskbar Tweaker\Strings. You'll see the cmdline_1000 value, where 1000 is your number. The value data will be notepad.exe, which is the default command line generated by the tweaker.
  If you're using the portable version, look for the value in the .ini file.
  
• Set this value to the command line you'd like to be launched for the click that you have assigned. In our case, the new command line will be explorer.exe.