You are correct, races are picked first. A slip up on my part.
That is why I like L1Z1x. No matter what type of homesystem spot you end up with, you should do ok.
Other races are more interesting then L1Z1x, but for those races to do well, they require a decent high resource double system to work with.
A great race like Yssaril does horrible if Dal Bootha system is his best double planet.
L1Z1x can still do ok even if they are stuck with Dal Bootha as his best double planet.
Barony also does ok if Dal Bootha is his best double planet.
I prefer races that can better handle a bad draw on planets to those races that have the best game winning chances.
I think Muaat can still do ok even when isolated because Muaat's tech is set up to do the pds grid to handle his defense needs. Granted, Muaat may not get his second Warsun built but Muaat is still set up to do the large fighter fleet strategy to go on the offensive.