Getting tokens out of Mobilization is a cool effect.
Of course, a great use for Morph early game is when you don't have either the correct mix of mana, or enough mana to pay the full non-Morph casting cost. Also, they cost a little too much, all those 3 drop bears, but you can always swing with them.
Here I got to play Decree of Justice just because I could.
I got to use Astral Steel just because it was "in the neighborhood." It is not a card with a specific role in a Morph deck.
In a better deck, I am sure you can get the Storm count to be much higher.
Overwhelming Instinct is a cool enchantment "in the neighborhood" that I got to play in this deck.
The main reason to cast Morph cards in White and Green is to ramp better, yet a few of these cards have additional benefits. Here Hystrodon gives me the option of drawing a card.
Here, you can see the underlying cards un-Morphed.