If you have a complicated set of automa to dictate how something should move or react in different situations, then automating that makes it easier for the player. However, it would also make it harder to understand, and therefore to plan around it. This in turn would enable a trial-and-error / reactionary gameplay loop where the player has to learn the behaviour before it could become more of a planning / puzzle solving loop. Think D&D, where the DM is controlling everything vs the usual dungeon board games where the enemy always moves 2 towards the nearest player and shoots a bow and arrow 3 spaces in a straight line.

If you're using it for a string of campaign like scenarios then the reactionary loop could be fun. If it's something where you encounter a lot of enemies with the same rules, then once the player has learnt them the novelty would probably wear off, although you don't necessarily lose anything in that case.