In the motor vehicle industry we are now getting traditional V8 power out of small 4-pot internal combustion engines, and all it took was some tightening of the emission regs. There is a lot of energy stored in liquid based fuels, and the technology to convert every last Joule from that fuel into useful power is expanding rapidly. I'm sure similar efficiencies can be had with turbine engines. It's just a matter of where you apply the best talent to the most realistic outcomes. If you set them playing with toys then that's all they'll ever produce.