I don’t dislike Dalton, but I hated him playing Rassilon in ‘The End of Time’. In the 70s the Time Lords had gravitas. It felt like you were watching a room full of popes doing important things. The character they wrote for Dalton was petty and irritating, not someone with the wisdom of thousands of years. I’m hoping it wasn’t the real Rassilon and just some errant Zygon.