I don't understand how anyone works in the very unforgiving-of-accidental-delete *nix world without those aliases.
The useless confirmations on every deletion is so intrusive that people will instinctively try to work around it. In the best case they'll undefine those crappy aliases in their own shell config, or maybe gravitate toward writing /bin/rm rather than rm to avoid the alias expansion. In the bad case they'll learn that "rm -f" will override "rm -i", and get in the habit of using that to shut rm up. Too bad that "-f" does more than negate "-i"...
People who don't actively work to circumvent the braindamage will almost certainly end up reflexively teaching themselves to just answer "y" to the prompts without reading. Or worse, they'll learn to depend on the prompts being there, and doing "rm * " when their intent is not to remove everything. "Yeah, I'll just answer 'n' for the files I want to keep". That's going to be a really nasty surprise when they use a machine without that alias.
No. Just no. Don't do it.
The solution in zsh is much better. Warn for "rm * " (or "rm * .o", etc) no matter what, since that's both very dangerous and very rare. But don't waste the user's attention on every single deletion.
… I don't think anyone does that.
Perhaps I should have said "sane systems" ;)
Fedora ships with that alias by default FWIW.
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.