1. I would love to sync with my other two laptops, but I hate that Sync is a two-way street. Is there a way to make it a one-way street, where it sees my home laptop as the source and all bookmark updates are derived from it.
2. Alternatively, is there a way to do an overwrite on importing bookmarks, so that I do not have to delete my entire set of bookmarks before importing a new set that has been exported from my main PC?

I guess this is probably a wish-list more than a question, because I am pretty sure the answers to both are: NO!