One of the main reasons to reroll a monk is not the playstyle nor the fun or functionality, but the ability to count as melee even if you are specced as ranged/heal and the absurd synergy of class trinket + t18.
In raids, you can effectively ignore 50% of the boss mechanics that can only target ranged/heal players while still managing one of the highest heal uptimes possible.
Ouch, i thought you already got the monk @ lv 100 and ~695 gear + up to date legendary quest otherwise "rerolling" does not make much sense at the end of an xpac ^^
Still, have fun and enjoy your journey.