Let me address the second question first... The Blizz UI only supports 120 action buttons without getting into custom button logic. So, nUI5 only supports the 10 action bars that Blizzard supports -- however, not all of those are available for your use as bars 7-10 are special purpose bars for shape shifting, stances, stealth, vehicles, possession, etc. That's why nUI is set up the way that it is.
You can, however, move the existing bars and you can change their shape and size. You can use '
/nui movers' to reposition the bars. You can also edit [
Interface > AddOns > nUI > Layouts > Default > nUI_Layout_Default_Dashboard.lua ] and locate the action bar section... the "
rows" and "
cols" argument defines how many buttons across and how many buttons down for each bar (must always be a total of 12 buttons though). The "
btn_size" option specifies how big the buttons should be.
You do not have to log out and log back in to the see the changes you make, either... you can edit the file while you're logged in to WoW... just save your changes and then enter the slash command '
/nui rl' to reload the UI.
As for scaling your UI... have a look at these FAQs...
http://www.wowinterface.com/forums/s...ad.php?t=20917
http://www.wowinterface.com/forums/s...ad.php?t=21010
http://www.wowinterface.com/forums/s...ad.php?t=21011
One other thing you can do with regard to your fonts is to play with the [
Interface > AddOns > nUI > Main > localization.lua ] file. You'll find there are a lot of fonts listed there that are commented out,. You can try each by commenting out the current one and uncommenting the new one, then save the change and do a '
/nui rl' again. One of the other fonts may render better on your wide-screen.