The Rogue is one of the classes that depends the most on his companions, it's damage output depends on it's ability to apply Sneak Attack so, excluding cases like the Swashbuckler subclass, you require an ally (or enemy of your enemy) to be close by, so in a party with all range characters things might get really though. Also, missing the attack is quite unforgiving due to how the ability currently works so you have but one chance alone to apply it.
With the propper rules for sneak attack the ability is way more forgiving and sinergizes really well with multi-class and other abilities; but the current system does not work well (I made a few suggestions on the topic here:
https://forums.larian.com/ubbthreads.php?ubb=showflat&Number=845743#Post845743 ).
Also have in mind that Assassin subclass is coming and if it works as in DND 5e it could make a craaaazy amount of damage when opening combat. In BG3, my experience so far is that you can do a lot of sneaking with a Rogue and coating weapons with venom, add unavoidable crits + multiclass to that and oh my god...
