Use Parts From Symfony, Laravel etc

I gotcha so pretty much exactly what Taylor did with CodeIgniter to create Laravel 3. Then later decided using everyone else's core components would be better in Laravel 4 and yet again makes name spacing changes in Laravel 5.

I suppose if every PHP framework followed the PHP PSR's there would really be no advantage to choosing X over Y because, at that point they would all be pretty much the same.

What advantage would there be to use CodeIgniter at that point over Laravel?

https://github.com/ProjectOrangeBox / https://github.com/dmyers2004