Have fun when currency and reputation is added. Generally the new "SLS" parts are nowhere OP, they're strong, yes, really strong. The problem for me always was that I really never liked the 4 stage asparagus staged rockets for lifting heavy things. It seemed unrealistic and just...not fun. Now with the SLS parts we can do slimmer, better looking rockets which may cost more than a "4 stage asparagus staged rockets for lifting heavy things", but it is more stable and just...more fun.If you don't like the parts, don't use them. The old ones are still in the game, so where's the problem? We all want stuff like currency, more advanced science-y stuff (to make space stations useful - instead of just having a floating fuel station in space), but the game is in Alpha and we will have to wait for that stuff.