Removes restrictions on the simultaneous construction of Megastructures, plus makes it possible to build more than one Dyson sphere and Scientific Complex, Decompressor, etc. the exceptions were the Watch Complex and the Assembly.

Replaced the bonus at the strategic center, instead of +5 +10 +15 to the speed of ships you get +10 +20 +30 to the fleet command limit. Otherwise, the speed bonus after building several centers becomes too large.