Crusader from Diablo 3 with its iconic sets as Thornsader and Roland Crusader is the best job you guys have ever done capturing the feeling of a faith powered unstoppable tank/knight, with its 2h+shield combination and its array of martial skills, the focus on weapon and shield attacks, toughness and thorns damage making you feel like a huge tank that kills people just by them touching you.
Please do not go back on this design and port Crusader and at least these two core set playstyles into Diablo 4, and please, please do not regress back into a holy spellcaster archetype. Considering Diablo 4 is alot more visceral, gory, and gritty, the Diablo 3 Crusader fits very well into the theme, and could even be more expanded upon adding more physical gruesome effects, reflecting the damage a bloodthirsty crusader could do in the middle ages.