On the topic of COR not getting a good Magian weapon Wildfire is very strong and has a great tp mod ^^.
Yes. Sadly the best magian weapon for COR also happens to be the hardest to obtain. Other jobs get some pretty nice weapons outside of Empyreans. And look at RDM. No native staff skill but they get on all the MACC/MATT magian staves. COR has B+ Dagger skill and no magian daggers.

But I'm not overly fussed about magian weapons for COR. I'm more upset SE didn't put Xbows on for RNG.