Here is an update to the softkey mods for V4.3 of Tytung's Jellybean ROM. There are two modifications, landscape softkeys and a soft power button.
The installer ZIP file can be downloaded from this link: https://dl.dropboxusercontent.com/u/22856583/NexusHD2-KK_V4.3-SoftkeyMods.zip. The file is flashable from recovery. There are individual options to select the landscape softkey mod and the power button mod in any combination.
I suggest that you first install or update your phone to V4.3 of Tytung's ROM and boot it up before you install these mods. A few minutes after boot-up, go back to recovery and install these mods.
Installing the power button mod replaces the CyanogenMod navigation bar editor search button with a visible power button. After installation, you have to turn on the mod by going to Settings->System->Navigation Bar Buttons and layouts. Click the lock icon, then the small plus sign at the left of the navigation bar. Scroll to the power button option and click it. Finally, click the lock icon again.