Sticking to a job can enable you to know most or all of the software there. Over time it forges the connections in the brain, that make you immediately think of important aspects and how things work together. It is good, that people realize, that they should include you in architecture meetings and such to get your input on things.
What you can do is, that you present problems you are thinking about and ask other developers for their input. Maybe even, if you already got a solution. You can also act as a mentor to get them up to speed. It can be very satisfying, if you manage to guide someone else to some learnings and then see how they are able to solve things on their own using that knowledge. Teaching is a very important thing one can do in society.
Also do not forget, that not everyone wants to work at high capacity all the time. People can also lean back a bit, when someone very reliable will take care of the problems. Perhaps decide to not influence some project at all for a change.