Well, I suppose you could game the Ideology trees by synchronizing your colonizers so that you gain a whackload of Ideology points in the same turn, thereby leaping over the points gap.
For example, if the tier-2 cost is 33 and tier-3 is 45, then you lurk at 24 points by stalling 2 colonizers ... and then colonize 3 in the same turn to hit 54. See if that lets you unlock a tier-3 instead of a tier-2.
It's a Beta. This is what we do!