twitch.tv/letterswords
Yeah, I don't really think cutting the fade-touched obsidian is a good idea, just thought i'd mention one more thing you could theoretically change about the route that could theoretically save time (under the best of circumstances).
Another problem with Cassandra is that even if we stuck with her for the whole time after crafting weapons we still would waste time because we'd need to get an extra influence level to get the warrior schematics perk, which we currently can skip out on by going with only rogues and mages. There is no possible route where we have no rogues, and I think no mages would also be bad (you'd have to go with something like Cassandra, warrior inquisitor, sera, and varric, since cole wastes time)
Another problem with Cassandra is that even if we stuck with her for the whole time after crafting weapons we still would waste time because we'd need to get an extra influence level to get the warrior schematics perk, which we currently can skip out on by going with only rogues and mages. There is no possible route where we have no rogues, and I think no mages would also be bad (you'd have to go with something like Cassandra, warrior inquisitor, sera, and varric, since cole wastes time)