I opt to use 3 Tenkis in my build since the monster I'd rather see in hand is Kaust. Pollux is certainly nice to have in hand early on, but if you don't draw into him you should at least have another chance of being able to draw into Algiedi. She is somewhat like Pollux, but special summons a level 4 Constellar from the hand when normal'd. In a case where you don't have either, there's still other cards such as Siat and Cyber Dragon to pair up with Kaust or another Constellar. 
Back to Tenki, it can also be used to search Fire Fist Bear. He can make use of any Tenki already on the field and can search out a Tenki himself if you don't already have another. 

Well, doesn't seem like I can help you much with your character's then. The only thing I can [i]try[/i] and say for the Joseph/Kenta issue is simply to pretend other things were done and said, but.... I dunno.

Also, just a question, but what kind of things did you have in mind for your characters when you made them with their previous decks? Telling that might help in finding you a solution.