Looking for feedback on webinar topics for dev leaders

Hello there! My company is launching webinars for senior developers, CTOs and tech leads. My colleague, an event manager, not a developer, asked me to ask for your feedback on the topic that you would find useful:

• “How to build your brand as an engineering leader”.
• “Using Twitter as a lead generation source for your company”

What do you think about those two topics? Any feedback is welcome.