Damn, Then it's better to wait and most probably they will offer you something better. You might get Millenia this time in pre approved offer.
I didn't take the millennia card offer either and now hoping to get Diners privilege card/Regalia in future.
Even if you get Millenia 50k spend based offer then write to me and I will tell you a trick which might make the pre approved as no condition apply LTF.
I am not 100% sure about this trick but it worked for me and it might work for you too.