Since you say it's just four developer, why not have a coffee with 2 team members, individually and talk to them about what you think, I see you know your stuff

Since you say it's just four developer, why not have a coffee with 2 team members, individually and talk to them about what you think, I see you know your stuff so I don't need to help you there? You dont have to convince all of them of you can convince a part of your team, you can standup. You can atleast have a brainstorming session with a few "educated" ones on your side.