I think this is true of just about every game from the NES and SNES era.
LttP is where Zelda games were headed by a new director, stopped being as open-ended and exploration-y, and instead began railroading the player along a mostly predetermined path instead. They went on to make some extremely fine games in spite of this model, but it took them until Breath of the Wild to really think about the kind of potential that Zelda games used to have before LttP resigned them to a stricter "keys and locks" format.
Otherwise, LttP can be considered a first draft of its kind as it's very rough around the edges in general. The most glaring thing to me is that they didn't think at any point to use the L and R buttons on the controller for anything, when they could have been used for quick-swapping or binding more items or any other potential convenience.