With each new generation, i always put together a team of pokemon from that gen only. I've never had problems with this, even in Black, White, Black 2 and White 2 i managed to put together 4 different teams Unova only without having 2 pokemon of the same types in my team, however, i'm having difficulties setting up a team in Pokemon X. I've only decided on 3 pokemon
I originally wanted Helioptile in my team, but i changed my mind when i saw Heliolisk's design. And theres literally no other Electric types to choose from except that Pikaclone that most likely has horrible stats. Then i wanted a grass type, and i got happy when i saw how many there were to choose from, but no one them had a spot in my team. I don't really like Gourgeist design that much. It looks OK, but it doesn't look like it fits into my team. Trevenants looks really messy, but he somewhats fits into my team. I would have chosen Florges, havent been for the fact THAT ITS NOT PART GRASS TYPE. It looks like a grass type, but it isn't. My OCD probably won't let me have this on my team if i already have a grass type, even if it isn't a grass type. For the last spot, i almost literally have nothing left to choose from. Lets say i fill spot 4 and 5 with: Trevenants (Grass/Ghost) Heliolisk (Elec/Normal) What other Pokemon can i choose now? I'm looking at the full pokemon list right now, and the only pokemon i could choose now without repeating a type in my team would be: Florges Meowstic Slurpuff Avalugg Xerneas.
I've already said why i wont choose Florges, and Xerneas is legendary, soo Meowstic, Slurpuff or Avalugg... Meowstic is too small to fit in my team, Slurpuff is too small and i don't like its design, and my OCD won't let me have a water type and a pure Ice type in my team together. Well fudge
To be honest I don't really "plan out a team" before I get a new game.
For the first play through I prefer to just explore the new routes, seeing what new Pokemon I can encounter and catch along the way, and then deciding if I like the look of them and want to use them on my team.
Currently taking a break from AC:NL. Will start a new town on new year's day. n_n 3DS FC: 2208-4574-2359