Plans definitely changed especially the line-ups of Blue and Gold. The magazine Amazing Heroes issue 188 has a news item about the team line-ups for X-men and Uncanny. Fast forward to an interview with Claremont and Jim Lee in Amazing Heroes issue 192 and here we get the line-ups that we actually saw from X-men 1 and Uncanny 281.
In the issue 188 the teams were said to be:
Uncanny: Cyclops, Rogue, Psylocke, and iceman.
X-men: Jean, Storm, Beast, Wolverine, and Gambit (add Colossus and you have the team featured in the Jim Lee art).
Both teams would be led by Xavier with assistance from Forge.
Both issues of Amazing Hereos that I've referenced you can find online and read the full interviews. Both are posted on sites we shouldn't mention or look at (but you may be able to find excerpts via google as well).