I was wondering if it was good if I added another world but I have only had 1 other season.

Yes. Add about 5 more worlds.

but why

I run teams in four worlds and I know folks who have squads in more worlds than that. If you love the game and have the free time to devote to each world, go for it -- stagger them to avoid overlapping recruiting seasons...those can make life hectic (not to mention run the danger that you offer a 'ship to a player in World A for a need area you have in World B...been there, done that). 

As long as you're familiar with the mechanics of the game and you're having fun playing and can afford to add worlds, go for it!

I wish there were more 2 a day worlds

I think the best way to go about it, especially if you have limited funds/time, is to have two teams that are spaced out so that you will be guaranteed to have at least one of them playing. Even with two teams the extra expense/time isn't all that much. If you only have one team you spend a lot of time waiting for the season to roll over doing nothing. That gets real old real fast.