i think that a logia awakening can manipulate the weather and the air around them and at the same time automatically frozen or burn the enemy person... ofc , if he can control his awakening he can control what he wants to manipulate 
well , but logias have to have something more than that , they also have that , but... they are the strongest df category , right?Would make much more sense to just transform his surrounding into his element lol
well , there must be a difference between a paramecia awakened and a logia awakened...Well if we go with the assumption that Crocodile has awakened his devil fruit, which grants him the power to remove moisture from anything, then I think it's fair to say that logia users awaken form simply allows them to change their environment to amplify their DF powers. Which can also be shown by how Aokoji and Akainu were able to alter an entire island to benefit their DF abilities. I highly doubt thy have control over the weather.
I think there is, but it's impossible for us to say at this point what that may be.well, there must be a difference between paramecia awakened and logia awakened...