As someone that owns all the champs I like the idea of the spell... But, there are some big issues. Range needs reduced on both the projectile and dash 10-15% reduction would likely do the trick. The cd would be reasonable at 80-120 sec. its just too abuseable as is.
Mobility is powerful and that much of it makes me question how it was allowed past QA in its current state...
Its fun and offers champs some hope of having an interesting game but... well you get the point. Tuning is required.
As for aram only account, yes they exist they annoy me. I would like to see a aram queue for those who have ~90% of champs unlocked. Though this is unlikely as riot generally takes a stance on keeping mode restrictions to the minimum and the number of accounts that have that many champs unlocked are in the minority i am quite sure.