I think the issue at hand for this topic is a lack of communication. Bishops not consulting with parishes in assigning priests.
I've been privy to the assignment process in about fifteen cases in the GOA -- mostly in one Metropolis, but still including two examples each in three other Metropolises -- and I can't think of a single one where a priest was assigned without the parish being consulted.
Consultation ranged from cases where the bishop sent three different priests to the parish over a six-month-long period (and the parish worshiped with each at least once, sometimes three times, and the parish council met each priest and his family, and then made a request) to a phone call, in which the bishop shared the news that he had finally found a celibate priest who would accept the low salary the parish was able to supply. No "screening" process necessary (or possible) in that case for obvious reasons.
I imagine some bishops are better at facilitating this process than others. However, in all cases, it's never as simple as "consulting" an individual parish and finding the best match for that parish alone. That's critical to understand. The bishop must also consider what is best for (a) the priest, (b) the priest's family, and (c) the diocese as whole. The needs of the parish are on equal footing with all three of those other factors.
In many cases, the members of the parish are ignorant of these other realities. They may want a certain young priest to be the new assistant since he's great with youth, but what they don't know is that their current senior priest is having marital problems and therefore not in a position right now to be a good mentor. The bishop, however, recognizes this and needs to make an assignment that will benefit the formation of the young clergyman, as well as the youth ministry at the parish.
Or a fairly large parish isn't thrilled with its current priest any more and has its eye on a 40-year-old priest who is currently serving a smaller parish in a nearby town. "There's a young priest coming out of seminary who can take that small parish, so why not give the 40-year-old priest a promotion and assign him here?" they say. But the bishop isn't sure the young priest is ready to be solo -- he probably needs to spend time as an assistant somewhere -- and where will the bishop re-assign the current priest, whose kid is starting her senior year in high school and whose wife just got a promotion at work? If the bishop is going to uproot this priestly family under such circumstances, it better be (a) for the right pastoral and spiritual reasons and (b) to a parish that will at least offer enough for the family to pay for the daughter's upcoming college bills (with mom now unemployed). Fortunately, there is another large parish whose current priest wants to retire as soon as possible, BUT it just so happens that this parish is also requesting the 40-year-old priest, AND this parish is in the hometown of the 40-year-old priest's presvytera. She's a convert who came to the Church after leaving for college, so this isn't her home parish, but her parents still live in town and that would help a lot with the family's four young kids. Finally, there's a third parish in the midst of a crisis and the priest there needs to be reassigned (or maybe even deposed). So, in this situation, the bishop has to orchestrate multiple assignments at once, balancing the needs and attending to the pastoral issues of several different parishes, several different priests, and several clergy families in unique situations. That's the bigger picture, in which the needs of any given parish are just one part.
And that's to say nothing of the parishes that are full of factions, or think
they're the greatest thing since canned beer and therefore deserve to choose their own priest, but who, in reality, eat priests up and spit them out. Or, on the other end of spectrum, a parish that has had the same pastor for thirty years. Experience and research show that it takes a particular sort of pastor to lead a congregation in that situation, and, in the majority of cases, the new pastor will not last long. Parishes in this situation (a) rarely know what skills and background they should look for in a transitional pastor and (b) they're more likely than not to think they're a great place to assign someone for the long term (after all, we just had a 30 year pastorate, so that's the kind of place we are!), but the bishop knows otherwise and has to therefore restrict the field to priests who can accept (and have a chance
at thriving in) that sort of ministry.
In short, there's a reason the bishop is the archpastor. Perhaps not every bishop is as good of a pastor as he should be and doesn't always take into account all four of the factors discussed above. But that's his personal failing (or maybe just the reality of the compromise needed in a complex situation), not an indictment of the archpastoral office itself, which, after all, is a charisma from the Lord.