Hi and congratulations on getting Joon.
If I were giving advice to someone in my alliance… yup… I’m gonna say, “Level your 4* heroes first. They are the backbone of this game. Plus leveling 5* requires a lot of resources and ascension materials equivalent to leveling 2 four star heroes.”
But… if I were in your shoes… I would scrap Hu Tao project and get started with Joon right away.
Joon, Sartana, Magni and Lianna are the classic TC 20 heroes which if I get my hands on them, I would scrap all my other project just to focus on these four heroes.
And I did so with Lianna when I first started this game long time ago, at that time I didn’t even have a full team of maxed 4* yet.
Why? Because good fast sniper is just that… good. Even at 3/70.
So in my opinion, just stop leveling Hu Tao and get going with Joon. (I think most of our friends in this forum would disagree with me though… lol).
But Joon is just such a good hero that he would perform amazingly even at 3/70.
And then… we have the next contender… Hu Tao.
To be honest, I have Hu Tao since long time ago… and I am very very lacking with my Yellow stacks. Kinda like… I have Chao, Li Xiu, Wu Kong, Hu Tao, Leonidas and Danzaburo. And I have like 12 darts and 19 something orbs… and I only level up Wu Kong (and regret it straight away because I received Miki the next day) and Li Xiu (because I need a very good tank apart from Boril and Kashrekk).
The rest of 4*… I don’t even bother to level them up. They are just… not that interesting. Yup I perform terribly with purple titans… but seriously… most of the 4* yellow seems a bit meh.
With all these 4* heroes I have… Hu Tao stays at the lowest end of my Yellow bench. He is not that bad… just not that interesting to play with and I don’t have Joon.
If one day I receive Joon I might even feed Hu Tao to Joon just to clear my hero roster lol…
So yeah… do Joon first.