On the other hand you could argue, that with this new Technology, the L1Z1X can be more easily crippled when their player is mishandling resource-management, or that this Tech-Pause (in which they set up for their uber-Techs) gives other player more time to react to them.

It's an opening, and a L1Z1X player should what they're doing if they go down this particular path.

Generally, L1Z1x race does not have strong allies in the game.  It's weak trade contracts, no influence homeworld and large starting fleet ensures this.

If this racial tech does allow it to buy any tech, then L1Z1x will stay an isolated race which is fine…. theme like.

As far as too powerful, well….any race that buys too much tech will lose.  You should always only buy the tech you need and spam ships.

The constant demise of Jolnar comes to mind with too much tech buying..     Get some good tech and then spam, spam and spam more ships to make the tech count.

L1Z1x should buy Type IV drives, Assault cannons and then spam ships starting with Dreads.

Yes other techs would be nice like Advance fighters but L1Z1x does not need it.  L1Z1x already has Cybernetics, Hylar so he is plenty powerful.

Spamming ships should be his focus and only do his racial when he gets the tech card to keep the costs down.

L1Z1x's racial would then be used to only to counter another races strength.  

1. Too many ground troops, L1Z1x buys the bacterial weapon.

2.  Pds protecting too many planets from bombardment, L1Z1x buys Graviton negator

3.  Too many races have skipping abilities, L1Z1x buys Transit Diodes.

But ……most weak military races will team up to stop L1Z1x's miltary threat.

If the L1Z1x player wants more allies in the game, then that player just should not buy the racial tech.

If the L1Z1x player wants to go it alone, then buying the racial tech is a big advantage.  But that player will know that L1Z1x will be elected for every  Nasty Political law that comes up  like…  Dreads -2 to hit, Only 2 ships of each type, Reversing Resources/Influence on planets, etc.

So the likelyhood of L1Z1x winning more games then average has not really improved. So you could say, L1Z1x is still a balanced race.