While the game centers around sword fighting, there should be a wide variety of game modes available. There should be a horseback option as well as a naval battle. The naval battle should work similar to AC4: Black Flag where you have a crew. Your first objective is to damage the ship. Once it is weak, you should be able to board the boat and kill the crew. Each hero should have a different job on the boat so nobody becomes bored. Thanks!
I think a siege type of game mode would be amazing where the defenders are actually defending and attackers are actually attacking. Have multiple objectives going on to spread out the teams and maybe have a system where attackers advance through the map to different objectives.
I also think a King of the Hill wouldn't be bad, a little 4v4 team fight chaos can be fun.
I do agree some more modes should be added but I was thinking of things like:
Faction Battle, I.E. all samurai team vs all viking team etc.
Or some variances on FPS death match tropes like capture the flag, except flag bearer can't attack because he's carrying a flag. Etc.
Don't pray for cavalry or naval battles that would require way too much and we wouldn't see the final product until 2020