I think it a flight of fancy to think you can and attempt to make your indoor trainer mimic your outdoor stuff. Just make your indoor bike fit you comfortably within reason for the things you are able to do on your indoor trainer or rollers.
Same for your outdoor bike, make if fit you comfortably within reason for the conditions and the way you ride outdoors.
Within reason means that sometimes you might sacrifice a smidgeon of comfort to be put in a better position to produce power and efficiently get it turned into over all speed or power to climb a hill.
Personally I can climb a hill better seated. And I tend to beat my son up them when he choses to stand.