What if Enel was the first showcase of what a Logia Awakening looks like?:
So far in the story we've seen every Awakening for each Devil Fruit type except for Logias, we saw that Paramecia Awakenings allow the user to effect their environment with their powers, we saw that Zoan Awakenings grant to user a brand new separate transform which boost their stats like strength, durability, speed, agility and they also gain vast recuperative capabilities however the drawback is their is ability that animal or sometimes god the fruit is based on can take over the user thus causing them to lose their mind but when it comes to Awakenings for Logia we have no idea what capabilities are granted.
The common hypothesis on what Logia Awakenings could look like was what occurred on Punk Hazard where Kuzan and Sakazuki permanently changed the climate of that island to hot and cold on two equal halves however I disagree with this idea, Logia Awakenings granting the user the ability to their environment just seems too similar to Paramecia Awakenings, I think Logia Awakenings will stand out as something completely unique compared to the other Devil Fruit type Awakenings and given that Oda is saving it for last it's probably gonna be something crazy and unexpected by most, but though I don't think Logia Awakenings were shown with Punk Hazard I have my own idea of what it may look like and involves Enel.
Enel had this transformation called the "200 million volts Amaru" where he basically encased himself in lightning to take the form a giant elemental humanoid figure that had the appearance of the Lightning God Raijin, I think may have been a secret example from Oda on what a Logia Awakening looks like/the capabilities it grants, essentially I believe a Logia Awakening allows the Logia user to encase themselves in their own element in order to take form of a giant elemental humanoid entity that has the appearance of a God or other entity.
So like for example if we apply this idea to someone like Kizaru then it would mean that based on the fact that his attacks are named after the Goddess Of The Sun and Light Amaterasu his Logia Awakening would grant him the ability to encase himself in his Logia element, thus allowing Kizaru to take the form a giant anthropomorphic figure made purely of light that has the appearance of the Goddess Amaterasu.