Bring Back the Gnome Classic
First, you have to logon using Gnome classic. I created a new user that will always logon using Gnome classic. I make it as my default selection. Go to terminal and execute the following commands:
sudo apt-get install gnome-session-fallback
sudo add-apt-repository ppa:jconti/gnome3
sudo apt-get update
sudo apt-get install indicator-applet-complete indicator-applet-appmenu
Now logout and login back to Ubuntu to activate it.
Customize the top panel menu
You still can use the global menu from Unity in Gnome classic. Drag your mouse pointer to the top panel menu. Press and hold Alt and [Super] keys then right click the mouse. You will see Remove from Panel option, click it to remove.
Do the same key combination again on the panel, select Add to Panel option, then select Indicator Applet Appmenu to activate the Unity Global menu.
You can customize widgets at the right panel, like logon name, network, email, date/time. Do the same steps above. You can remove or add any widget as you like.
To customize the panel style, do the same step above and select Properties. Select Background tab. You can use system theme, or pick your favorite color, or use background image. Set the opacity setting to make it transparent.