More dynamic split tabs

[mazayadigital]

Hi everyone,

Prior to zen, I had 2 chrome windows side by side on my side-monitor, and I'd have good flexibility in using them in that I could keep the window to the right as-is, and I could open a new tab just for the window on the left.
With zen when you start a new tab it opens a new tab separately, moving away from the split tabs I currently have in display, whereas my intent is to just add a new tab to the left tab (while being able to go back to the previous tab if I want to). This might be complex and I may have to open two zen windows side by side just to make this happen, but I thought I'd throw it out there!