What I'm saying, though, is that there is a strong probability that players will get frustrated if the preset system isn't a bit more complicated than a blanket level 3+ offensive spell preset.
Are you frustrated when you play Xcom if your overwatch doesnt trigger on a specific ennemy ?
You aren't because that's the rule of the game.
Different games, different rules, different resources involved and situations at stake.
For one, XCOM is basically â€œalpha strike: the official gameâ€ where you are supposed to blast everything during your teamâ€™s turn and Overwatch is basically the throwaway option (that comes with the aim penalty too) when you donâ€™t have anything better to do.