To do races together, it would be good, to show the ways also from the other boats also on the chart. Maybe in a different colour.
Sometimes we discuss if somebody was around the buoy or not.
Maybe a button to numerate the buoys, to make the course clearly for everyone.
It could be helpful to set some default instruments and cameras. So in multiplayer games it would be not nessecairy, to set up the hole screen always.
On mousklick show something like a lens, with witchone you can see trimm helps in the sails or look for the buoys or something else.
Work on the Multiplayer session engine. A lot of time i can see open sessions, but can not enter, because their local ip is provided. I think those are ADSL-Router or Cable-Modem users. I found a workaround and descibed it on my page. But this is not a nice solution.
Fix the bug "Access violation"! It can be so booring, to host a session and this error comes up. From my point of view it hapens mostly if a session for more than 4 people is open.