What's Wrong With... The Five Doctors

Bullet points for this one I think...

• The Eye of Orion looks just like North Wales, and the atmosphere is similar to Earth after a thunder storm. What's so special about it if North Wales offers everything it does?
• All the monsters in the Death Zone are out in the open, apart from the Dalek. Why is it in a separate metal-walled chamber when the place is a wilderness, and why only one of them?
• How can a Yeti be wandering around if they're simply robots which require the Great Intelligence to animate and guide them?
• The Cybermen wander into the hall of the Dark Tower whilst the First Doctor and Tegan are standing in the middle of it talking to the Master - yet they fail to see them both.
• There are different groups of Cybermen but relatively small numbers in each - so why does every group need its own Cyber-Leader?
• What makes the prepped Cybermen think a bomb can destroy a TARDIS - and why do Turlough and Susan think it can harm them?
• The Doctor fails to react to Susan (and she to him) as one would expect if she was his grand-daughter whom he hasn't seen for many, many years. At least she sort of smiles at the Fifth, but she doesn't even acknowledge the Second and Third.
• If she's a Time Lord, she should react equally to all of the incarnations of her grandfather, not just the Doctor who looks like the one she used to travel with.
• So he only recently saw the Brigadier again, but the Fifth Doctor also fails to react in any expected way to seeing best friend Sarah Jane Smith again.
• (Later we will have to ask the question why none of this story gets referred to in School Reunion, where Sarah talks as though the last time she saw the Doctor was when he left her at the end of The Hand of Fear).
• The current Doctor tells the First that he has regenerated four times, so the latter says "So there are five of me now!". But how does he know that this is the current? Numbers Six to Twenty might be kicking around the Death Zone somewhere for all he knows.
• Why does everyone treat the First as the oldest and wisest when he's the youngest and only looks older? (Same thing happened in The Three Doctors).
• Just why does Borusa put so many hazards in the Doctor's path if he wants him to deliver something as important as immortality to him?
• Two Time Lord councillors we don't see are Thalia and Zorac. Where they the ones Borusa sent into the Death Zone first? Thalia and Zorac?! Why not an army of Chancellery Guards?
• The Doctor is suspicious of the Harp of Rassilon as Borusa doesn't play music - yet he couldn't in his First incarnation but could in his Second, as Time Lord skills change with regenerations.
• How does the Second Doctor know what happened at the conclusion of The War Games if he was forced to regenerate straight after? Him working out that Jamie and Zoe are phantoms depends entirely on knowledge that he shouldn't have.
• How does he know that they haven't simply been removed from an earlier timestream just as he and others have been?
• How does the Second Doctor know that he's bending rules by visiting the Brigadier when he could simply turn up at any point in his life whenever he felt like it? Is the Brigadier's life somehow interconnected with his own as with the Master and other Time Lords, so that they always meet up in order?
• And why does the Third Doctor not twig straight away that he's also facing phantoms, as he ought to know that Mike Yates resigned from UNIT?
• If Time Lords could get new regeneration cycles all along, why didn't the Master simply go after this instead of the whole convoluted Deadly Assassin / Keeper of Traken schemes?
• And why does Borusa need immortality if he can just regenerate all over again for another twelve times?
• And why does he keep speeding through regenerations these days anyway?
• Why does everyone simply shrug off the destruction of the Black Scrolls if they've been preserved since the Dark Times?
• Flavia seems remarkably well-informed about what has been going on in the Dark Tower. She just wanders in and confers the Presidency on the Doctor moments after Borusa has been defeated.
• Surely she must know he's not going to suddenly turn politician and stay behind in the Capitol?
• As originally broadcast, the first three Doctors all depart in versions of the TARDIS at the end. That's the TARDIS - not other Gallifreyan TT capsules. As they already have their own back where they were abducted from, doesn't that mean they've now got two each?
• And if the Fourth got picked up from a punt on the Cam, what's he doing lying under a fence miles away? And why does he seem so happy about it?
• So, is Rassilon dead or isn't he?
• I'm sure there are many more, so feel welcome to comment!