This is were I must most strongly disagree with you.
I disagree.
Most ninja have preferred techniques or roles, but outside the specialized hiden-users, that shit is built on a pretty broad base of skills.
Tsunade is a medic-nin, but her combat ability is built on terrifying taijutsu as well as ninjutsu.
She knows Lightning, Earth, Water, Fire and Yang Release, she has S-class fuinjutsu, and a major summon contract.
Kisame's swordsmanship is but a small element of a repertoire that includes the most potent Water ninjutsu outside of a bijuu, chakra absorption(both through Samehada and in his own right), shark summons and good enough stealth to hide from a jinchuuriki at literal skin-touching range. He uses Water on screen, but his wiki article points out he also knows Fire, Earth and Wind Releases.
Sasori was a terrifying fuinjutsu user, had fuckoff levels of ninjutsu mastery(enough to use other people's bloodlines), was a badass enough doctor to create unique poisons and to turn himself into a cyborg. As well as create human puppets from the bodies of his victims.
And then there was his ability to create tools.
Even Maito Guy, master of taijutsu, has a summoning contract and knows both Fire and Lightning Releases.
He just doesn't use them much.
You do not succeed at the high levels without a very broad base of knowledge and skill.
Specialization is for insects.
And the Aburame
(to be fair, even Shino knows three chakra releases Earth Fire and Yang by the end of the series)
I am not sure how much of his student's success to attribute to him. Frankly he got one of the best teams to start with. Shikamaru's promotion had more to do with his maturity and intelligence than strength as a combatant.
Raw talent has to be trained. Especially important when you consider that Shikamaru's second most defining trait,after his smarts, is his laziness.
And calling Team Asuma one of the best teams to start with is something of a stretch.
That is a somewhat unfair claim to make when I just referred to a mechanics issue (our melee being capped). However, I did forget the charm discount so thanks for reminding me of that.
My apologies if I offend; I honestly missed that part of your post.
The rest does stand though; the charm discount is especially important for us, given our limited training slots before the Invasion/Exam.
Thus is it reasonable to believe that we can get any training out of Asuma before the next part of the exams? If we can't then why not delay that project until after the exams?
Because events are in motion now, and will not wait until we are ready.
Not to mention that if you want help from people, it pays to develop a relationship ahead of time.
A Melee trainer even only as good with weapons as Sakura is with ninjutsu/genjutsu theory is the difference between having 5 Melee charms and having 7.
I also disagree with your transition from the first to second sentence here. Building up a large set of contacts is a strategy I would expect of a high social character not a low one.
I do not agree.
Hatake "I read ero in public" Kakashi is hardly a social butterfly, but few people have a rolodex as deep or as high quality as his in canon.
Besides, not all your contacts will be available when you want them; they have their own lives to lead.
Always have a backup if possible.
I wanted to add a bit more, but I am running out of time and need to get to class. The tldr of my thoughts are as follows: Lets finish what we started with Sakura before starting anything else.
You might have a point if there was ever any indication that Ino's presence makes it harder for us to train.
We can walk and chew bubblegum at the same time.
Edit: In the long run we should get a melee trainer. Asuma might be an option there, but there are other fish in the water. Not sure what I prefer at this point.
Someone taught Ino how to use the tanto in canon.
When, I don't know. Daddy's girl has the hookup though.