Well, it certainly is a bit of a mess. A lot of the issues I’ve seen in my neck of the woods seem to have come from old imports that were cut off in odd places–causing interpolation points to ‘clamp’ to the edge of…tiles I assume? Before the import from earlier this year, you could see the cutoff lines in some parts of Longueuil.
As far as how I feel about it though, I think this data is indispensable and I’d rather have the current slightly-broken version than nothing.
I’ve only really been active for something like a year, maybe a year and a half, but the vast majority of the work I’ve done in that period is surveying addresses. This is because prior to the most recent import, huge portions of Longueuil had no address data -at all-. And sadly, since most of the regional mapping attention is limited to Montreal fully surveying and keeping these addresses up to date is likely impossible without imported data. With the current data, it’s at least possible to look up the rough location of addresses.
I’ve not been involved in any data imports, but I would welcome any work to improve its accuracy. From my experience, the recent import fixed a lot of weird & broken interpolations in my area, but seems to still be stretching single addresses to cover the full area around the building as you say. (Here’s a recent example for folks, I could locate a bunch of these if needed)
