Hello everyone and sorry for the late reply, I didn't noticed till now that the last messages notifications I received were sent to the spam folder of my webmail before the were redirected to my mailing software.
about universal toolbar based skins
1 - On universal short toolbars icon on the left and on the right of the main toolbar can be turned invisible but cannot be disabled.
In the option menu you can replace a function button by another one, so for example with the filter button which was not yet updated to be turned invisible, you had the ability to replace it another function button to get to turn it invisible. On some other skins, only the hobby button is turned invisible in order to let you choose to display or not not the buttons you want, except the "hobby" one (Kenobi ?).
2 - The menu panel icons and the side buttons form the toolbar are the same icons ingame, this means if the buttons at the left and the right of the toolbar are turned invisible, the are invisible to in the left arrow vertical menu, it only appears the background of the buttons which is a different picture, common to all buttons.
3 - You can assign the FX button of your choice in game, shortcut button to access the choice menu is the very small button at the bottom left of the auto attack button.
The big lotro store button at the right end of the toolbar is the default design of the toolbar. Its location cannot be changed in an universal toolbar based skin (a skin which fits to any screen resolution which doesn't require the final user to manually edit the skindefinition.xml with a text editor file to properly place the toolbar by changing X and Y values to locate it at the middle bottom of the screen, depending its resolution). To say it simple, an universal toolbar only change the pictures applied on the default toolbar, so it behave exactly as the default toolbar since there is zero line of code to modify it.
This is a limitation of the game. Modifying the "internal mechanics" of the toobar breaks its ability to self-locate at the bottom middle of the screen, so there are just a few skins of that kind included in the JRR pack to avoid frustrating most of the users.
ingame main loading screen
The .TGA file corresponding to the fiullscreen loading screen in game is :
...\Documents\The Lord of the Rings Online\ui\skins\JRR Skins collection\JRR CORE\misc\theater_top_bottom.tga
There is a second picture acting as frame of the loading progress bar, it is located in the same folder :
extended quest book issue introduced by lotro update 22.3
Thank you for warning me about the issue with the extended quest book panel, as I'm no more active in game, so I didn't knew about it.
Your code was on the very good way !
I've re balanced the location of many elements and applied it all the JRR skins v6.22.4
I cross fingers it will be as well balanced for english and german lotro clients that it is on mine french one
The default task panel is narrow
I totally agree the task panel quests list looks like a bad joke
In order to customize it, its default code has to be featured in the lotro skinning pack, which is not the case for every panel from the game.
And even when the code is there, it not very simple to recognize it among the numerous panel codes.
And I'm not sure it doesn't shares the code from another panel...
Anyway, I had a look in the skinning pack and did not found it, sorry
EDIT : It as been fixed in a lotro update : Now there is a handle to extend it on the fly