You seem very knowledgeable and express yourself well. So please hear the following as me trying to engage for the benefit of my knowledge rather than being argumentative.
In terms of this perspective, I'd agree that the data on Motta is limited. It's basically one and a half good seasons, some hipster tactical chatter (especially the mythical 2-7-2 thing), an interesting player profile and a good looking, exotic vibe. These factors can definitely make someone take on a hype that isn't really warranted; see Marco Rose, Villas Boas, Pirlo etc.
Thing is, basically every contender for the United job available has a significant asterisk next to their name. I'd say it's easier to spot who isn't suitable than who is. As a fanbase, we can also be quite reactive in terms of what we want from managers - i.e. after dour Mourinho, vibes Ole was refreshing but then studious Rangnick was embraced etc. Now everyone seems to want a charismatic manager as it is seen as a weakness in ETH. So I'm aware that we can be biased towards someone like Motta, especially with Alonso, whose profile is quite similar, kicking ass in Germany.
All I'd say though is that we've tried everything post Fergie. We've gone for a big variety of manager profiles. None have worked consistently. Ultimately we just need the right person in the right setup. Not the right person in the wrong setup or the wrong person in the right setup. If Pep of Barca B days was available right now, would you take him? If Klopp when he was at Mainz was available, would you take him? Or do they have to have proved something at the top level? Is the problem with United really that we've chosen the wrong person, not the wrong profile? I'd say so. Same with our signings. Sanchez and Pogba failing doesn't mean we shouldn't buy ready made, top class players. We just need the right ready made, top class players. Pellistri and Martial failing doesn't mean we shouldn't buy promising 19 year olds. We just need the right 19 year olds.
So I guess I'm agreeing with your reluctance to go mad for Motta, given the limited success we've seen thus far and the factors that could be bringing false hype... but also wondering if you have anything concrete that makes you think he's the wrong guy? Thanks in advance.
Edit - Just an additional point... I'm not so sure the DNA knowledge is really relevant for our situation. I think DNA alignment is important and hopefully Ashworth and co define it properly. But I really don't see it as a factor because we're currently in great flux and our DNA of the last 10 years has proven to be fairly rotten and inefficient for modern football. We need someone to help us shape a new DNA. Obviously there's non negotiables that I hope continue to be weaved in through the fabric of the club - academy players being given a chance and propensity more towards attack than defence. Beyond that, I think we shouldn't really be wedded to much else. Especially not formations as some of the brightest young coaches play 3 at the back.
and you completely lost the plot.