I wanna see Sarada and Boruto fighting too, even if they don't go all out.
I think it's hard to happen, though. Boruto and Sarada were never portrayed as rivals, it's quite the opposite - they are being portrayed as each other's support.
You're right. The author has made that clear already.
But what I'm afraid of is that could actually turn out to be detrimental to their progress.
If they're all supporting each other, then what will give them the same drive Sasuke/Naruto had? At least Sakura had a drive - to catch up to her teammates.
Mitsuki, on the other hand, is already way far ahead of them and thus has no goal of surpassing anyone in particular, and will more than likely stay like that for most of the series.
Boruto also seems to be on the safe side with how he's already out-shining Sarada, and he probably wouldn't really care if she was showing better progress. He's already surpassing everyone with ease, so for Boruto, there probably won't be any competition in particular for a while, unless Kawaki is inaugurated sooner.
Sarada will probably be the only one with a competitive attitude, but she's apparently not so concerned about Boruto in relation to her own progress.
So within the whole team, there's no existing competitive atmosphere, and this will most likely stunt their growth. As a result, Kishimoto will be forced to give them power-ups instead of have them train to get stronger since they won't be that determined to surpass anyone in particular.
I honestly don't know how the author will make this work without any competition, substantial or subtle.