The "but who can deliver all that?" question proves even further why we need a proper director of football, not just a scout who's been promoted to the level of his incompetence.
Keeping tabs on managers across Europe -- playing style, record with young players, etc. -- is basically a full-time job, like van der Meyde says. There's next to no chance that Moshiri and Kenwright follow these things carefully enough to make an informed decision about who's best to lead Everton forward. That's why the shortlist is basically comprised of names close to home, like Allardyce (well-known in England), Dyche, Silva (early season PL success stories), and Nuno (early season Championship success story), with a couple of well-known, out-of-reach options from abroad (Ancelotti, Tuchel) thrown in for good measure.
This is the sort of thing a proper DoF can handle. The job is all about learning what players, managers, coaches, etc. are a good fit for the club and it's goals and using that information to find the right candidate when the club needs a new player, manager, coach, etc.
Where managers are concerned, the DoF is particularly important. If you haven't noticed, the vast majority of them are only good for two or three years at an individual club. There are outliers -- Sir Alex Ferguson, Wenger, etc. -- but by and large, most only perform well for a few years before they burn out or their ideas get stale. The only way to keep transitions smooth is to have to someone who understands managerial talent and has targets lined up ahead of time. Moshiri and Kenwright weren't at all prepared to be in our current situation, hence the lack of movement, and Walsh just wants to bring his pals to the club. It goes without saying that that's a bad process.
The best move for the long-term health of the club would be to sack Walsh and find someone qualified to take on a greater share of power in making big football decisions, especially if it takes the burden off of Moshiri/Kenwright. It's a healthy sign that we want someone in that sort of position, but in practice, it's been a disaster and, done poorly, a DoF does more harm than good.
In the absence of swapping out Walsh for someone better, Moshiri and Kenwright need to look into football consulting firms. Moshiri worked with 21st Club when he bought into Everton so clearly he's not against the idea. Ted Knutson's consulting group would do a much better job of identifying suitable targets than any of the big decision-makers at the club, which would hold us over until next time. I'd still prefer to see us have qualified decision-makers in house, though.