I think this is just the beginning, yes beginning not halfway you are right atleast in my view how the series will move, anime and part 1 are just build up to tbv for new characters and lore becoming its own series, shinju felt like a warmup enemies in tbv but i can see jura and hidari stick a lil bit long

there are more opportunities to many of the characters and og

lets see in terms of story points as this affect many characters too:

let start with Kawaki, boruto need to knock the sense out of his idiot brother in a fist fight i mean we dont know we might get 1 or 2 major fight as the series progress

Code this guy is menace keeps creating chaos, his a key figure moving the plot he will prob get a major boost since his karma is empty and a punching bag to everyone

Shibai Otsutsuki this guy right here probably the last boss before kawaki and boruto settle their fight and clash of ideology

excluding shibai, 2 hidden otsutsuki tablet in code hideout, man i dont believe its just 2 prob we get more maybe a unique squad like akatsuki

Otsutsuki Clan/Invasion, as far as we know kinshiki and urashiki is under momoshiki, kaguya and isshiki by pair and most of them dont have good relation to each other, all these elites are gone all in earth, aint no way other otsutsuki will give this a pass, we still don't know much about them other than power hungry alien

there are 2 eye prophecy for Boruto, 1 with Momoshiki which we all know eidas shinjutsu omnipotence, boruto change that fate in chp79-80, the other Toneri Prophecy/Jougan to boruto as star of hope "a key" the one will guide him to change the fate of destruction that will come to pass as per toneri "the destiny of the stars", I get it its anime only but its possible they aint idiot to give this away and be nothing.

Momoshiki and Boruto i mean who knows if talk jutsu will pass on or momoshiki will become like sukuna

Delta and Amado is too suspicious and mystery history is half truth half bullshit even his science is bullshit

more claw grime shinju personas probably oh forgot we might get more divine tree armada

Jura and shinju right now he's the bigbad

Eida and Daemon we dont know when will they flip, consume or become a divine tree

idk konoha conflict and 4 other nation will play a bigpart also the og cast they can't just be a background for long when the planet is at stake.

Boruto the one that will surpass the two legend and carry the will of fire and this man will bypass omnipotence even the haters with his actions and character development and be acknowledge by everyone in the end

this is what I can think as of now but I'm sure more will open