Yes, I do believe it has already been decided that there will be many more companion options before it's all said and done. The one thing I hope for is the ability for a larger party size. I'm sure if it's not implemented in game, someone will create a mod, but if I could have just one more slot, I'd be so happy. :P A party of 4 makes it very hard to balance the party and make thing interesting. At least with 5 members, you can balance it and give it some flair.
