Change browser.tabs.loadFolderAndReplace back to default value of True

browser.tabs.loadFolderAndReplace Boolean

True (default): When opening a folder of bookmarks in tabs, the existing tabs will be replaced by the new bookmark pages.

False: Existing tabs will be preserved when loading a folder of bookmarks. The bookmark pages will be loaded in tabs that are appended to the current tabs.

Even with the setting at True, if you don't want to lose the current tab, and want new tabs at end instead of adjacent to active tab use Ctrl+Shift+click on "Open all in Tabs" (or Ctrl+click ..., whichever shortcut will load new tab(s) in foreground is the only one that will work)

More information on configuration variables available in about:config entries and for users not familiar with the process there is about:config (How to change).

That is the consequence of fixing this bug:

• Bug 440093 - Don't overwrite current tab when opening multiple bookmarks in tabs

(please do not comment in bug reports; you can vote instead)

This isn't possible anymore, due to the fact that this Boolean entry has been removed: https://bugzilla.mozilla.org/show_bug.cgi?id=395024

In my Firefox Aurora 8.0a2 (Windows 7, but Ubuntu 10.10 as well) the current behaviour could be described as follows:
Open all in tabs

• Normal click: opens all in new tabs, changes focus to first one opened;
• Ctrl + click: opens all in new tabs, changes focus to first one opened;
• Shift + click: opens all in new window, changes focus to first one (tab) opened;
• Ctrl + Shift + click: opens all in new tabs, doesn't change focus.

Whereas I would like it to be as follows:
Open all in tabs

• Normal click: opens all but the first one (which overwrites current) in new tabs, doesn't change focus (due to the fact that the first item is already in the focused tab); in short, it changes the currently focused to the first item from the folder and appends its' rest on the right side;
• Ctrl + click: opens all in new tabs, doesn't change focus;
• Shift + click: opens all in new window, changes focus to the first one (tab) opened;
• Ctrl + Shift: opens all in new tabs, doesn't change focus.

This behaviour was present a few versions ago and only lately have I looked for the solution to this. I encountered many bug files regarding this topic with people speaking against Firefox's behaviour that would close existing tabs when opening all in new tabs (from a folder), which possibly influenced the change that I would like to be reverted.
Please let me know if it is possible to attain the behaviour I described.