liara and Shepherd have a MALE child

Here is an idea for  another add on   for me2 &3  liara and shepard have to be romantic in ME1 then in ME 2  or ME 3 shepard finds out he has a child..I know that asari only have female children but.. What if  because shepard is so high in paragon points that liara has a male child?  or female it doesn't matter. I think it would be a great  add on like leviathan..  I know shepard dies at the end of all 3  ending but if he had a child you could make   ME4  and have that shepard save the galaxy again from some other  race of bad guys.