I had this idea, however i know little about plugins etc. but this is my suggestion:

Being able to tp to certain co-ords in the worlds you have acsess to. This way, if you don't have multi home or used all of them and found like a spawner or diamonds without a pick you can tp to that place. This May be a problem with pvp worlds such as nether mining and pvp because people can tp to pvp and tp to safe then tp to pvp and repeat. However I think it would be a good addition to tp or a new feature.

I have no idea about this, just thought it'd be nice :D