What would have happened in Doctor Who had Colin Baker stayed past 1986?

Just wanted to expand on a discussion last week about what would have happened in your opinion if Colin Baker had stayed as The Doctor into 1987 and beyond and had achieved his desire to be the longest Doctor ever. It's a sort of parallel thread if you like!

No one knows for certain what would have happened off course, but as I said last week I do believe the Sixth Doctor would have become popular in his own right, based on the more humorous slant he was given in Season 23. In fact it's been stated that viewers were becoming more comfortable with his interpretation at this point after his initial hostile portrayal, so maybe from that point of view his Doctor may have turned out to be quite a good one.

What would have happened with Doctor Who itself is more difficult to predict. I think JNT would have left eventually and maybe the show would have been given the fresh impetus it needed. Would it still have been cancelled in 1989? Who can say for certain? With the same scripts McCoy had in his first Season, it may have stayed the same and maybe that still would have happened. With a New Producer, maybe Cartmel wouldn't have been given the job of script editor and the silliness of Season 24 and cringey issues like the Kandyman wouldn't have happened. With a New Producer, the show could have been overhauled and maybe saved from the axe, but would we then still have the show we have today?

The joy of doing a thread like this is there are no right or wrong answers. It's all down to speculation and what you think. What I think may never have happened, it could have gone in a completely different direction.