You could make it easy to change or clear a hand where we just select some combos and not all combinatorics...
i.e: I click "Choose Suits" then go for "QdJd, QhJh"; Then click Done;
Now, i cant unselect these two hands or select all 4 suits again; If i click on it, it changes to "QcJc,QsJs";
If i click Choose suits again, and choose all 4, it invervets the selection;
After play for a while i discover that if id like to add "QcJc,QsJs" i need to just click in these and not clicking on "QdJd, QhJh" again; Its like QdJd, QhJh was already selected, but the program do not show it is selected, and if i click on then, im actually, unselecting it, and not selecting again..
Its kind confuse to explain, but easy to see if u try it