Being that I can't handle the cold, I'm going to be stuck on the trainer all winter.
Most lack the ability to watch the Lord of the Rings Trilogy, or something like that, and ride at the same time for hours on end inside.. So most can only tolerate intervals, very short intervals.

It's worked out for me, I think. I can definitely see an improvement already.. now the question is: quality over quantity? and what kind of quality? Would I be faster if I rode 4 easy hours everyday?

I've probably taken it to an extreme though, no intervals below 350W. 20 x 2 mins at 380-400 w/ 1 min rest.. and 20 x 1 min at ~450 with 1 min rest seem to work well.

So, I've improved on about an hour a day; just LT and V02max stuff.

If it were me I'd chose quality with a lot of rest, over quantity everyday, every time.