I do not know about other players, but I think amphibious ability is too powerful. That is why, I tweaked it a little bit, to lower naval landing penalty only for 20%.
Just find 8-_abi_nam_Amphibious.abi in your game folder and overwrite the old ability.
Similarly, find the LocalStrings_CW2.csv and overwrite it to see modified ability tooltip.
Since surpriser ability seldom works in the game, I tried to tweak it a bit as well. Just find 16-_abi_nam_Surpriser.abi in your game folder and overwrite the old ability.
Here are the files:
[ATTACH]30576[/ATTACH]