As others have said, Sunlight Sensitivity is probably the gamechanger here. If you're getting reliable advantage, that's huge, and if you aren't then you don't really get much from Volo's.

If you're locked to Scout, I think this provides a strong argument for Volo's kobold. The level 17 ability is very powerful, but locks down your build in a couple ways:

• Because you need to attack two different targets to get full Sneak Attack damage, you will almost always want to be building for ranged. This means that the sorcerer cantrip you get from Mordenkainen's kobold is just utility: you won't be able to use Booming Blade well, and Fire Bolt won't be as good as just taking a shot. It also means that Draconic Cry isn't very good, as you'd need to be within 10 feet of your enemies to use it.
• Because it takes up your bonus action, that means you're missing a reliable way to get Sneak Attack. Steady Aim would be fine on other ranged rogues, but it also uses your bonus action. Pack Tactics provides this quite easily off your frontliner, who will generally be within 5 feet of two enemies.

If you're planning a more melee-focused rogue, you probably want a different subclass.