I did, but some features don't work and i want to keep my settings...
A stronger thruster would make it possible to change orbit with an built station docked in front, too.
Please don't be offended by this, as it's not my intention to offend (just my warped mind doing it's thing), but this idea reminds me of the recent Futurama episode with the Planet Vinci, where Fry tried to nail a nail with a nail.
Using a DF to boost an entire station is just not the best tool for the job. There are dedicated tugs out there which would be the way to go, or even a regular space craft.
Granted, it is a "tug" and tug boats are generally super powerful, able to move even full supertankers, however.... power is inversely proportionate to speed. Whether you're talking about a prop plane, a boat, or a wheeled vehicle, to ramp up the torque, you reduce revs (on wheeled vehicles, reduce prop pitch on a plane which is akin to low gear on a car) at the drive wheels and go slower.
That's a conundrum in space. At best, I would say the RCS should be powerful, maybe with at least 3 settings. We already have standard and vernier, maybe add one another level at the big end, a little more powerful than standard for dealing with large objects.
But then again.... this is orbit. Just like you speed up to slow down, nothing happens quickly at 7600m/s
lol
, and even weak thrusters will still get that massive module moving.
The greatest problem, IMO, with the stock DF - aside from the Apollo era innards - is the CoG shift doesn't really work (even when it's all powered up and working). that's why I recommended a longer tailboom, and moving the front RCS as far forward as possible, even potentially putting them on booms to extend forward when a load is present.
(picture the holding a model of the DF with a heavy module attached, turn it sideways - your thum ends up on the body, and your fingers hold the tail, and you apply pressure with your fingers against your thumb. If your thumb is too weak, you will pivot around the front hanging mass - it's hard to explain, but it makes sense in my head, a longer boom would give more leverage for the computer to create a fake CoG shift, and moving the front RCS forward would make it even easier and more effective still)