No biggie, just flavor and tactics left?
Drop spiders prefer to attack from above, using their controlled drop ability to land on their opponents. They often act as a form of aerial support against parties that board drow ships.
Looks very good! I'd just change that last bit to "risk being stunned by the landing and unable to attack." Seem a little smoother.
Hurrah! Which spider is next?
Transferred to Homebrews.
Spider Rigger (Giant variety)