Update for 2.7:
I'm not playing ESO anymore, so I don't actively maintain this addon. Thanks to Grashek sending me a fix for API changes I uploaded an update for 2.7 though.

Want to really see that one single buff you want to keep up 24/7 for max. dps, or maybe a short duration buff that is hard to keep track of between all the other buff symbols? I wanted to, but couldn't find an addon for that. So here it is, the next addon in the line of addons with a crappy name convention:

BuffTimers! (doesn't only work for buffs)

Update 1.31:

• Updated to new API version
• Can now show multiple notifications at once, each will fade after beeing shown the set duration.
• Notifications will now work again correctly if an effect didn't run out completely after the notification fired before.
• (WIP) Custom filters: On recieving X start timer for Y. A bar for Y has to be configured! E.g. Molten Armaments doesn't give you the Major Sorcery buff, use this to make it start the Major Sorcery bar too.

What is this exactly?
With this you can make completely stand-alone timer bars for one specific spell each. You just go in settings (see pictures), choose how many bars you want, and then choose for every bar what spell it should show, also the size, colors and optional notifications(sound+text) can be customized.

READ BELOW BEFORE USE!

Due to how the game/API works tracking some things isn't as straight forward as you might expect.

1. The effectname is not always the same as the spell that causes it (extreme case: Cleansing Ritual from templars, the effect is called Healing Ritual. Yes, like the other spell...)! I included a debug mode that will output all effect changes into chat, activate it by /buti d or in settings, then use the spell you want to track and check how it's actually called.
2. Additionally some spells have multiple effects with the same name which can cause the spell to not be tracked correctly by the addon. In this case I have to implement special handlers/filters to make it work. If you encounter such a spell please activate debug (see 1.) and send me the complete output that using that spell produces. Use my author portal for that or leave a comment, a screen of the whole chat output is probably the easiest way
   Example of what I need (here Cleansing Ritual): i.imgur.com/8GY82WH.png

About profiles:
You can create, rename and delete profiles in settings.
Loading profiles can also be done in settings or with /buti profilename/ID, you can output a list with profilenames and their ID with /buti p.
(Important: Deleting profiles will decrease the ID of every profile above by one!)

Loading a profile with more bars than currently active will reload the UI, loading one with less will set the loaded profile's number to the previous profile's setting and lock the additional bars. That will prevent further loading screens in the future and also won't change the UI of the loaded profile.

Chat commands
/buti d Toggles debug mode.
/buti s Opens settings panel.
/buti p List profiles.
/buti profilename/ID Load profile by name or ID.