I've been going back and forth on this subject for awhile now. IT'S BEEN NAGGING my subconscious ever since the reboot of the show occurred. I could say that I could rationalize the differences of the Nu series and blame it all on the Time War.. Retcon of events, and future events compounding past classic series canon, Clara, and The difference with the Daleks, Clara, and Clara (rolls eyes), and so on.. By rationalizing the time war as the culprit, I can remain calm..safe.. comfortable in knowing the universe is just kooky because of those crazy Gallifreyans.. But when you really start to think about it, the idea of the Nu-Who series being actually set in an alternative reality, or a "Kelvin" like continuity, the inconsistencies become apparent. The main factor, the clincher for me is the latest Christmas special..
The way the TARDIS was structured in the show, the way the Doctor morphed into a new but slightly different version ( I know that was for effectiveness relating the series to the original Tenth planet episodes) But if the TARDIS in Hartnell days is now slightly different, and the one from An Adventure in space and time was more like the original, then it would almost seem to me as if the new series has a Kelvin time line, after all there's a reason they call it Classic Doctor who and the new series is called a reboot right?? Could it just be because the new series is it's own timeline, and not a true continuation of the original? It's something I KEEP coming back to from time to time. What if the original universe is a separate reality, and this new series is nothing more then it's own alternative "Kelvin" universe? Would that be so bad? I don't know.. I still like the original idea of the Time War being responsible for all of the differences, but then again, there's a lot that can be said to point to an alternative time line..
I can't be the only one who ponders this..