Why use the launcher at all? I only ever open the launcher to get updates for the game. I have a shortcut on my desktop to the games main file - run that and straight to log-in screen.
TBH, I hope they don't merge ESO's launcher into bethseda.net launcher, as this would likely mean killing off running the game via it's main executable like you can do now. I know it's all the rage with companies to have their own forced-upon-you launcher's... but I find it highly annoying to have to open one program just so I can open another program (*looking at you EA, Ubisoft & Blizzard.net App just to play D3).