Having asked for them, I can attest to at least two features found in RoR that are in Catalyst:
- Volatile flash (vs. the more stable stash)
- Automatic param parsing / composition from attributes
This is a "Good Thing"(tm) - just because someone else came up with the good idea doesn't mean that you aren't allowed to use it yourself.
My criteria for good software:
- Does it work?
- Can someone else come in, make a change, and be reasonably certain no bugs were introduced?