You can swap champs if you want, but ezreal is still an excellent ADC.
The current fad is to build him "blue build". It focuses on stacking AD and CDR so that you poke hard. Its not as burst as AP ezreal and doesn't melt people like ADC ezreal; its somewhere in between.
But botlane ADC ezreal will always work because his E is so useful. And Q/R will always be fun to use. --- Signatures that consist of quotes are bizarre- you could falsify a quote and no one would know.-Jesus