I think a great idea for boom beach would be to put in something to find players. Kind of like how you can find a find a task force by typing in the name of the TF except typing in a players name to find a certain player. And also be able to invite that player into your task force. You click on them and unless your friends with them, all you can do is visit their base.
I would also like a filter for the task force search page like on clash royale. A simple filter for the max number of members, the language/country, requirements, force points.. a little bit of everything