Vic made the point on the site itself that though her earthly father was named such and such she would never call him this. Never. just as my dad is Bill but i have NEVER called him this.
I once horribly embarassed myself by vocalizing the terrible name (the one of the 4 letters) at a jewish friends house in context of my need to talk about the faith all the time. Now he is a rank unbeliever but even so he was most offended. So i have, maybe for wrong reasons, backtracked from advocating an over enthusiastic use of the Terrible name. Even if it was freely used in OT times, (so genesis often writes people as saying "as YHWH lives" etc) with the jewish fear of even uttering it for fear of abusing it being a later legalistic response, yet i cannot really in my heart dare use it myself
So the question may not be what is His name, but what are we to call him?
I suggest something like SIR (well, Lord, etc is a synonyms for sir in its old meaning of sire, the english form of sieur, which in fact was lord in the first place).
I actually feel safer calling him TERRIBILUS PATER, which is my latest version of SANCTUS AND TERRIBILUS (Holy and Terrible) or H&T for short. (I use latin only because to me it connotes majesty and power, or perhaps because i have catholic tendencies - well I do!!

)
Of course we can call him daddy, that is what abba means and the spirit of adoption whereby we can call him this has been given to us.
But i am too fearful of the dread lord and puissant sovereign (old forms of address to the Kings of England) to get there yet
I might also suggest that who we in fact worship is shown by what we do, by our fruit. (not to advocate force, for it is our careless and spontaneous words and acts that relveal this, so forced effort is only trying to hide this not change it)
Thus we can call Him all sorts of things, if we are carnal and the rest i is not Him we worship even if the name is the same - unless and only unless He has started a personal relationship with us and one on one led us to repent of this kind of thing, whereby bad fruit and genuine worship can co exist for some time while the first diminish and the second increase.
perhaps that, bad fruit showing bad faith, is where Ba'al worship came from at least in part. it also says somewhere in the prophets that "while you were in the desert (the 40 year wandering) it was not to Me that you prayed and sacrificed". I interpret this as being another example of what i described above.
And Isaiah 1 makes it clear that if our fruit is bad much if not all of our prayer is empty noise, even if the words are right.