That's boring and is likely the reason why helena has been introduced to canon despite having been around all these years.
We've already seen helena and Damian but we didn't get to see more from Damian and Ana That's far more interesting. have her introduced the way Damian's brother was just done in TT's. A character for Damian not Batman.
Batman has too many kids and the Batfamily is too big no more characters added. Bruce has enough kids boys and girls. You can't get more kickass than Cass anyway