Thats a pretty good idea actually.
And Ven becoming a master, thereby being capable of passing on a Keyblade is hinted in Birth by sleep itself.
If you look at Ven's towers in the Dive to the Heart, over the course of the game the glass changes. Towards the end of the game as Ven we see the tower for the final time.
Initially, after aid from Sora's heart: http://kingdomhearts.wikia.com/wiki/File:Awakening_Ventus_1.png
Big SPOILERS Second time: http://kingdomhearts.wikia.com/wiki/File:Awakening_Ventus_2.png
Third time, though it also appears in the second one: http://kingdomhearts.wikia.com/wiki/File:Awakening_Ventus_3.png
(Sorry for KH wiki links but they are correct and serve a valuable point)
Look around the outside, mark of mastery symbols right, hinting that he has achieved the level of Keyblade master, though not officially recognised as one. Terra himself was never officially recognised, except by Xehanort in an attempt to secure Terra's allegience and yet he was able to pass on the keyblade.
And following Grass's idea of Riku gaining a Keyblade after dueling with Xion, we do actually see him wielding Soul eater all through CoM. But even if he didn't lose his keyblade the first time to Sora, what's to say that this Keyblade he gains now could be a second one, if the theory proves true of course, and this could be the one he gives to Kairi later on?