Ventajas
Excellent engineering-focused environment. Broadcom started with a lot of core technical knowledge and has continued to acquire more every year. Large percentage of Engineers and PhD's in the workforce. Startup-like mentality means plans move ahead quickly for corresponding market success.
Desventajas
Risk of burnout; projects with less upside or longer payback have a hard time getting funded. Your experience may vary depending on which part of Broadcom emplys you - as an ongoing roll-up of many startups there is always cultural integration in process at various stages in various places. Another problem with the acquisition strategy is that founders or key members may leave the newly-acquired division quickly. Especially true now the share price is lower.