【ソロ称号】バランス調整フュンフ採用 光スパバハソロ 【グラブル】｜Super Ultimate Bahamut Solo with Light using Rebalanced Funf [GBF] 

It's good but she's not worth 2 blue papers if that answers your question. Light has been eating really good these past few months. There's tons of substitutes. Fun fact: Her S3 is interesting cause it applies to off-element MC as well meaning Hraes can abuse it lol.

LVL 130 is enough from someone who TC her for the first eternal lol. the lvl 150 is okay-ish (they meant to make her viable for hard raid with zombies and DOT like agastia and subhl, etc) You rarely goes on red HP anyway using Light ele. so it is kinda pointless for sure. The best thing of the rebal is S3 now 10 turns and can be cut from ougi, before it expired, you can always have everyone with the s3 buff. Plus it also stack with sandy/other chaser. and it is around 30%. So it is kinda neat.