Frankly put, it's a fantastic development environment -- mostly because it's targeted at developers/power-users and not the average user.
It has the added benefit of being inside the "RHEL/CentOS" ecosystem (similar commands, structure, etc), provides a glimpse of what's-to-come in future releases of RHEL/CentOS, and since majority of servers in the enterprise are RHEL/CentOS based, it's a natural fit.
All that aside -- have you tried Fedora 21? It's a complete overhaul from previous Fedora releases and has a lot to like and offer.
I guess I have always had ideological issues with RedHat, as a distribution. It doesn't surprise me that they would put the -i alias in Fedora; this kind of "helpful" addition that is actually totally annoying and inappropriate is, IMO, emblematic of the distro.
