I am currently planning a campaign consisting of four kobold PCs, using Volo's Guide to Monsters (p. 119) as my starting point for the race.
However, I am worried about Pack Tactics and Sunlight Sensitivity.
Pack Tactics. You have advantage on an attack roll against a creature if at least one of your allies is within 5 feet of the creature and the ally isn't incapacitated.
Sunlight Sensitivity. You have disadvantage on attack rolls and Wisdom (Perception) checks that rely on sight when you, the target of your attack, or whatever you are trying to perceive is in direct sunlight.
Kobolds as pictured in Volo's Guide seem very strong, gaining advantage on practically every attack roll. The inclusion of Sunlight Sensitivity does not, to me, seem like it's doing very much to make them weaker - in a typical combat scenario the worst it'll do is cancel out the advantage given by Pack Tactics, rather than ever realistically give disadvantage. Kobolds obviously favour fighting in the dark, so simply railroading every fight to be in the sunlight does not seem like it would be fun for me nor the players.
How would I bring down the power level of these kobolds to something more resembling that of PHB player races, while hopefully still keeping some kobold flavour?