She should have LOUD audible (because right now it really isnt) cue when she is charging her rocket, this alone would already help a lot, at worse she could use 250ms more delay before shooting.
People overreact, fragger is still a lot better overall, 5 fraggers are still a lot harder to deal with than 5 javelins, fragger is still safer for spawn camping, he still have more hp, he is still more universal etc.
She should be better at killing grouped enemies than fragger and she already barely is, especially with how bugged/coded explosive damage is. My only grip about her is cheesing duels, but to be honest if you are using her ability to kill someone in a duel its already a waste, you can do the same with a fragger with almost half the CD.
A LOT of balance issues in DB are because of terrible audio, no idea why nothing is being done about it but SD obviously balance the game around audio cues but said audio cues dont work correctly so its rather frustrating at times (for example i cant hear phantom cloak almost at all since few patches or how terrible audio cues are for air abilities).
Not really sure about guided mode, in my opinion it shouldnt even be in the game, as fun as it can potentially be (so far i avoid using it since her rocket hitbox seems to be a lot bigger than her rocket visible animation, adding to confusion), it could prove to be a rather big problem when people learn how to use it.
In any case, she NEEDS better AND louder audio cues, she MIGHT need longer charge time and thats about it (we could talk about her rocket speed but until they nerf fragger nades speed i am against it). I might change my opinion in the future but so far she is less frustrating to go against than stacked thunders/fraggers/auras/naders/fletchers.