Visits to see examples of other cities used to be a lot easier before Inno cut back on server capacity, increased latency, and bloated game code to make cities loading take far longer. I think that remains a good idea to see examples of city options, and poor or well designed cities.
Another reason for no MH help could be the MH capacity is full. That's tiny for smaller cities, and easy to overfill (but not without noticing and spending on Wholesaler) with my current capacity of 46 million. It's pretty reckless coding to have the traditional game rules from the now deprecated browser Flash game, ignored on mobile as well as the newer speed menus for FS members and those who've traded or polished in recent days, but only active in some polishing modes on HTML5 code.
Hint: Smaller players should run their whole map of neighbors at least a few times a month. I'll polish back everyone in my speed menus, but with 524 Provinces claimed and around 340 neighbor cities on my map, I often miss seeing new neighbors, and cannot justify the time to go around polishing all of them to see who's active back.