Whilst I agree with the principle in general, there is a specific edge case that does go in favor of the Rogue with the current system. If you are Hastened (by Potion of Speed or the Level 3 spell) and have 2 actions per turn, the current implementation allows you to make a ranged AND melee sneak attack in the same turn as long as you can get Advantage on both; for example by Sneaking using both Bonus Actions, or attacking a Threatened target from range then closing, Faerie Fire etc.
But closer on topic, yes it would definitely be preferable now they have a better code framework in place to look at the system again. They could give the Rogue a sneak attack "charge" per turn instead of sorcery points and a toggle the same as the Metamagic mechanic.
I had always assumed the bonus action attack, after using a ranged weapon, was a bug. Technically, you'd get this after attacking with a light weapon in the main hand. But, who knows, maybe it's working as intended.
