Well the TL have "a billion years" of history, although if you go by the statement in Genesis of the Daleks that they mastered such intercept transmat technology when the universe was half its present size one would think that gave them billions of years of history. In any event, them being pricks was around the time of Rassilon and slightly after (so his successors might have been less evil, or maybe they just didn't like him so they deposed him if the legend is to be believed). By the time of the classical series they had become relatively benign, although by the end corrupt elements were again acting like pricks. Not surprising since some countries seem to change a lot with different people in power, so its quite conceivable over millions and billions of years TL behaviour would fluctuate depending on culture and who was in power. As to whether it will fluctuate in less time... well there is the time war and president Bond.Big Orange wrote:@mr friendly guy - So the Time Lords were pricks before in the EU, right? That time with no excuse of staring down several massive gun barrels (ie. the Daleks, Lord President 007, and the myriad awful super-weapons, creatures, and memes resulting from the War).
As to whether those creatures were really a threat to the TL, the Doctor doesn't think so from pieces of lore that remains.