I find the new system great, besides that it escalates too quickly! i don't mind it being expensive to upgrade buildings when playing on hard, what I mind is that I go from a max of 30t to 140t in one upgrade! i think its way to much of a jump! its almost like after one upgrade you're at the capabilities of what you had before the beta! I think this is sad because, for me, it feels like im being cheated of a great experience trying to make it as a space program! the same goes for the rest of the buildings (or at least some of them!), the training facilities let you hold 5 kerbals from the get-go and BOOM upgrade!, now take your 17 kerbals out.. what ... the ... F... from 5 to 17 ? really.... i would like to see a more balanced system where i go from 30t to about 60-70t that is more than enough to make it to minmus or the mun and kerbal wise from 5 to 8'ish?.. i get that some people like to just crazy it up with 1000's of kerbals and spacecraft the size of the mun, but those players tend to play the sandbox or on easy settings.. make some more stages of the buildings or just balance the current ones at least.. or just make an option to edit how big of a jump the building takes pr upgrade.. I hope im not alone in this, i really just want to have an experience where im getting pushed towards creative designs that are of more realistic nature instead of just being able to put tons of boosters on.. I get that some of the higher tier items are heavier and the big jump could be to counter it out, but i kinda like the idea that on hard-mode you have to refuel in space before going further towards the mun/minmus that early in the game.. with a 60t craft you can easily go to mun/minmus, maybe not so easy to get back every time, but thats why you have probes, flybys and satellites, so you are able to get some science to get the docking ports and so on, before you tempt to land with kerbals! all this will extend the early gameplay a bit, but i like that, i like the challenge! end game is always the same, why hurry so much to get there? when the real hard fun is the early game where you struggle to become a successful space program