New team t-shirts

My PR team is in the middle of a small debate. They are wondering whether or not we should change the design of our shirt each year. There are some students on the team who say that it's fun to have a new shirt each year, and there are some who say having the same/similar shirt for a while helps with making the team more recognizable, and helps with the team brand.

I am neutral, since as leader of the PR team I would like to see how my students will figure this out, and since both sides have good arguments.

Since this was brought up in today's meeting, it got me thinking. Where does your team stand in the whole new shirt/old shirt thing? Please give reasons if you can.

Thanks!

*Note, this is not for the debate purposes, just for my own curiosity*