Totally agree. For a nat 5 hero shes pretty underwhelming. She actually does a decent job of keeping herself alive and can use her abilities quickly due to her fire rate, but provides very limited support and isnt really a great DPS machine either (very weak bullets). If you compare her to other 5 stars shes pretty much considered the weakest.
Thats not just us saying it either, if you look at Rygel’s pvp and farming lists here (which are pretty accurate) she ranks the lowest on pvp and doesnt even show up for farming as shes not effective even for any specific mission levels. She has no specialization, shes not a threat for pvp, shes just plain not good.