IMO.
2. A good lens for taking group photos, preferably a fast lens. (maybe a pancake)
3. A good lens for portrait shots.
Some affordable possibilities are
- Olympus 12-40mm f2.8 that can do 2 well and can passably do 3
- Olympus 45mm f1.8, Panasonic 25mm f1.4, Olympus 25mm f1.8 etc. can...