Brother Psyah,
Aal is a word with a very vast meaning. Followers of Firoun are also addressed as Aal Firoun in the Quran. However, Aal e Ibraim and Aal e Mohammad are none but the chosen, purified members of the family of the Prophets whom you are ordered to send blessings. To follow them is the straight path to Allah (swt). They are the Prophets and the Imams and were bestowed with divine favors and knowledge:
Peace Pagluu
This is where we part ways. Although I may accept either definition of Aal as being correct I will not accept the insinuation that to send blessings to pious members of the House, in our prayers or otherwise means anything more than us sending blessings to our parents or to our loved ones.
The reason why we send blessings or even ordered to send blessings is not because those people are authorities over us in their own right, rather because it is good adab to return the favour that they have delivered Islam to us.
A durood is a du'a which is a supplication for and on behalf of people please do not confuse it for being some sort of prayer or honouring more than this. It is good adab to supplicate for our predecessors whoever they are, we are not supplicating TO them but FOR them.