I've built a few junctions here and there, but to be honest I'm still a noob at OpenTTD. There's a lot to learn about!
It would be neat to have an event where an experienced player and a noob player are paired up in the same company and the experienced player could set up some stations and have the noob player emulate their design in a sub-line or something like that.
It would also be neat to work on junctions as a team. I'm totally consumed with OpenTTD lately, so I just want to keep the community alive and this project seems pretty awesome, especially seeing all the work that has gone into the client.
OpenTTD 4 life!