Small teams and large teams can be effective. It is not proportional either. Small teams afford agility and avoid feature creep. Fewer overhead to alter or cha

Small teams and large teams can be effective. It is not proportional either. Small teams afford agility and avoid feature creep. Fewer overhead to alter or change the projection of a project away from its intended targets. Large teams suffer from feature creep because you introduce non-development talent pursuing concepts under the umbrella term of product design. You only need two to three product design people no more. But the second you get convinced into more product design folk they'll be shelling out feature requests that then put teams in feature creep which really blocks engineering goals and architectural planning for major systems. Usually better if doubles as an engineer and product designer because from my experience product designers who don't understand how their systems work are air bags.