Another approach to this . . .
There is another approach to this question. Aspects by transiting Venus to a natal planet will indeed likely be short-lived. So, let's go back to the basic question of what Venus in Aquarius might mean.
What house of your natal chart is Venus in when it crosses into the sign of Aquarius? Venus in a certain house has a significant meaning of its own. You should be able to detect changes relative to Venus in Capricorn versus Venus in Aquarius within the context of its house meaning. For example, Venus in the 9th house: In Capricorn, Venus might suggest diligence in your studies at school, while Venus in Aquarius might relate to shifting over to "in-the-field" work as an extension of what you did in school, a sort of apprenticeship situation.
This line of exploration and relating Venus to a house position is more fruitful than just trying to relate Venus to a sign meaning. Dave