One of the lack in the Railo world was the availability of an inline debugger. I always use fusion debug or internal cf inline debugger when using abode cf and sometimes I felt the lack of that developing with Railo.
The good news is that a railo compliant version of Fusion Debug will be available very very soon ( the public beta programm has just finished some week ago ). I had the opportunity to test the beta product and was working just fine as I expected it.
The functionalities are great and basically the same of the Fusion Debug version for coldfusion. Installation gave me some trouble that I easily solved on the google groups that the guys of Integral setted up to support .
As far as I know the enterprise Railo edition will include a license of both Reactor and Debug products. I am a Fusion Debug license owner but I am not sure if the Railo product will need a license update or not. I am waiting the product release in the next weeks to check it.
In conclusion I think that having an inline debugger available make Railo even more a robust solution.