Got the Rogue plat. For some reason the last few times I played convoys just would not spawn. Tonight I knocked out around 10 in about 2 hours. Clocked in at 46h15m total. I'd say somebody familiar with the series could have done it in 35-40. I had a lot of wasted time trying to figure things out, like how to get to chests that were inaccessible from my area of the map, or not doing particular tasks in the most efficient way and ended up doing things more times than I needed to as a result.
Good game overall. Pretty fun, but the story is pretty pointless and it doesn't do anything to reveal the Templar's goals, motivations, and how they differ from the Assassins IMO. Just two sides of the same coin kinda thing. The stuff in the present time is stupid as

. It's in first person POV and you never learn anything about the character nor is there any story element at all in that time period. I don't think they even said the MC's name--one of the other characters just called him dumbass over and over again.
I will say it's very unbalanced. I finished the game with over a million pounds that I simply had no way to spend. At the very beginning you can run out of money, but other than that the only time you run into issues is if you're buying skins for upgrading Shay's health and such. Those can be expensive, with a single skin running at 20,000 pounds. I think I spent around 400,000 total on that simply to avoid hunting and whaling as much as possible as it's kind of a time sink. An interesting point of this is that the game is glitched for skinning; you have challenges for skinning particular creatures, but what triggers the challenge being completed is having the skin in your inventory. You can buy skins and complete the skinning challenges that way. Kind of silly.
The whole Naval Campaign is pretty pointless. The only thing you get out of doing it is to unlock gear and to complete the challenge/trophies associated with it. Once you've unlocked everything the only reason to continue that game element is if you need money...but by the time you finish the Naval Campaign you're swimming in money, so why waste your time doing it further? You also get a ton of tobacco in the game, which can be sold for money as well but serves no other function. On the other hand...to upgrade the Morrigan or to perform renovations you need other resources, such as wood or stone or (for some crazy goddamn reason) cloth. That's right--the renovations have crazy cloth requirements. The houses sure as

don't look like they're made out of satin, so I don't get that. Regardless, you have to rob caravans or supply camps in order to get those resources. Why is there no in-game market? I'm not joking when I say you get tons and tons of money...so why can't you use that money to buy the resources you need for other activities? It's such a stupidly unbalanced set of game elements in this way.
Again, I enjoyed the game quite a bit, and it was satisfying to complete everything, but as I've said before I don't think I'll be playing another AC game to completion. They're just not designed well enough to justify the time spent on extraneous fetch quests and jumping through pointlessly artificial hoops geared towards making you play longer. I'll definitely play story of the other games in the series, however--I'll just stop when I'm done with that part from now on.