How about being able to check

Transaction history

User's achivements

Win ratio

How many players currently online in Tb and maybe having a list of them

If posible then being able to check how many duel servers are currently up in Tb

Newest thread made (you already added last post thing so..) and maybe if posible then being able to check last post and thread of a pecific board and sub boards

Being able to check items on sale

Maybe some of them aren't posible but all them will be really helpful if you can make it happen