Utilizing newly installed Elixir 2 widgets, I went back to Go Launcher.
But this time, I could clearly see the lag during screen transition and app launching. It clearly is not snappy as before.
I am not sure if this is from the icon full of Elixir 2 Widgets or Go Launcher Theme. Go Launcher is known as taking more memory (=heavier) than LPP or ADW.
I will have to play with different settings to find out more.
AOSP Lock Screen - light, neat and simple
Home Screen 1 :: Go Launcher with DOT Theme, Go Calendar and Go Weather Widget.
Home Screen 2 :: Elixir 2 with 31 icons / switches
These are screenshots from Launcher Pro Plus (paid version). I can see screen transitions are faster and snappier than Go Launcher but it's still no where closer than previous settings.
I will have to play with Elixir 2 widgets (fewer icons, less refresh) and see if it helps.