Sorry, I’m too tired to give one of my typical wall of texts, but honestly you don’t even need it. Your current build looks remarkable. The only thing you want to do is swap the skill points in Sept Etoiles and Lunge. Sept Etoiles does a deceptive amount of damage. It’s the second highest bursting skill on the Swordsman tree, second only to Hexen Dropper.
I do understand that you are mostly going for a tank, and Lunge is, well an absolutely wonderful amount of evasion. It can be used, when timed correctly, to be very effective against bosses too. It isn’t a permanent buff, however, and most physical damage in this game is not that threatening. You can simply block it if need be. The real threat comes from mages, especially as a tank.That’s really your choice though between these two skills which you would get.
For stat points, you’re going to get different answers from different people. Personally, I believe that Fencer promotes the most balanced build possible.
The dexterity will help your evasion, which is obviously important. Rapiers , however, are fairly low in attack, so some strength is needed to offset this.
Con is tough. Con should mostly get you to the HP goal you want to have. Swordsman already has such a high base HP though, that you can get away without going full Con and still being beefy.
At level 280, the current cap, you will have roughly 16.5k HP naked with no buffs. If you are equipping armor, you’ll probably get 500-1000 HP, depending on your level and tier of gear. This puts you at 17k let’s say. Now you want to add in Plate Mastery, which is 1.7k HP when you level that attribute all the way. You can also get a little chunk of HP from collections as well. Let’s just call your HP 19k. Now, wearing 4 pieces of plate will increase your HP by 10%, and Swashbuckling, with the attribute, will increase it another 25%. Basically find the amount of HP you want, subtract 25%, and use Con to fill in the gaps.
If you’re sitting late game with 40,000 HP, you’re incredibly tanky. As a Swordsman this means you have to be sitting around 34,000 without Swashbuckling on. This means you basically need 160 Con from both gear and Stats, assuming you don’t get HP from your other gear as well. Even if you’re on the safe side of the HP marker, you can get away with only having around 150 Con from stat points, and still being very hard to kill. This leads you to having roughly 150 points leftover for other stats.
Overall, I’d recommend a build of perhaps 2 Con: 1 Dex: 1 Str or even 4 Con: 3 Str : 1 Dex, since accuracy is basically unimportant in PvE and you can’t evade magic mobs late game anyways.
No matter what you do, you seem to have a good grasp on how the game works, and what builds work overall. You’ll be just fine.