Please make Sneak Attack a toggle instead of a declared attack, the same way Great Weapon Master feat gives you a toggle for the +10 damage/-5 accuracy or the Warlock gets a toggle for Repelling Blast. One of the benefits of Sneak Attack is that it is possibly to trigger it on both mainhand and offhand attacks. Seeing as abilities like Colossus Slayer can trigger automatically, I don't see why Sneak Attack should have to be declared, especially since this is breaking with the tabletop game.
This would also allow adding spells like Booming Blade without making it useless for Rogues, who normally benefit greatly from such spells.
