These small services type of businesses are able to pay larger rent and are more stable clients than the “boxes of clothes or accessories from China” types of stores. And since phone repair is an in-person service, it’s less likely to be hurt by online retailers.
I believe more malls will move toward service businesses. One here in Austin allowed a giant trampoline park in what used to be a flagship store. The store is packed with kids and parents.
I’m very interested in this area and how it will continue to play out!
So I don't see how some independent operation that brings something new to the table could be a bad thing.
Unless it upsets your taste to having to deal with some unpolished store that lacks cooperate design.
Beyond that, this is the reality of how modern mall development works. Mall properties are basically ephemeral pump and dump real estate schemes. When the anchors move out to the latest highly subsidized mall with bigger and better TI incentives, little guys move in. Some of them are garbage, but many are not. Sometimes the mall makes it, sometimes it doesn't. Nothing new or special here.
Also, the Merrimack outlet mall that opened a few years ago is also almost certainly taking foot traffic away from the southern NH malls.