I once had a similar thought process but I am not sure it is the explanation that makes the most sense. I often hear this idea from Xtians posed to "non-believers" that Jesus is one of three things...liar, lunatic, or lord. I would add a fourth idea to that which seems much more plausible given the expert scrutiny of ancient writings. Jesus was likely "labeled" after the fact. That is to say...most of the sayings (where it seems Jesus is calling himself God or God's son) as well as most of the most extraordinary events attributed to Jesus...were likely LATER inserts by non witnesses...in order to make it seem as if Jesus was the fulfiller of all prophecy. If Jesus was "labeled" long after the fact he doesn't need to be liar, lunatic, or lord.<quoted text>
As far as miracles go with Jesus I find it more likely he was a slight of hand artist who was able to fool the people of his time just as David Blaine can do that today. People of that time knew less of illusions and found supernatural explanations as more plausible than today.
Of course, we have science to thanks for that.
That is saying IF Jesus actually existed, he could also have been a composite of many.
With the possible exception of "faith healer"...which we have many of today...it is likely that ALL claims of Jesus' "miraculous" otherworldly achievements were likely later (non first hand witness) additions to original texts or oral traditions. The same can be said about statements such as the "I AM" statements attributed to Jesus. Many if not most scholars are doubtful (for good reason) that Jesus said that type of statemtn. This is due to cross referencing of all anceint writings of Jesus...writing styles, Jesus style of parables, continuity, context, etc. I AM statments are unique to (I think) one gospel writer (or perhaps two which were obviously almost verbatim copies for large parts of the gospels). There are a lot of commonalities in the canonical gospels as well as other gospels...but many times where the canonical gospels become unique...is when there is a grandiose claim. It would be those grandiose claims which one would think would be the MOST important sayings and events to NOT be left out by ANY gospel writer who would have witnessed it.
If we ever find actual writing which can be dated accurately from the time of Jesus ACTUAL life...I would be very surprised if we see much if any corroboration in them for these speculative grandiose claims/additions which many scholars think were made in later texts.