My worry is that it doesn't take too long to accumulate a lot of magic and even rare items, so if you have to spend a lot of early ability points into Repair, it could limit the benefit you get from taking it...
Right now, weapon specializations are dump abilities because they do basically nothing useful, so that is a place where I don't have to bother putting points, so they could go into Repair. But if (or hopefully WHEN) they become useful again, then that's another place competing for ability points.
Both true - as you say, a lot still depends on how Larian eventually tweaks other abilities as well as gold/equipment availability, if at all. But just to yet again repeat the point from the OP: as long as they ditch permanent durability loss, and don't make Repair more nerfed through some other compensating change, it'll be a big improvement over the beta implementation IMO. We'll see.