Why do you think it is not on the agenda?
In 2016, Ukraine was granted a NATO Comprehensive Assistance Package (CAP), comprising the advisory mission at the NATO Representation to Ukraine as well as 16 capacity-building programmes and Trust Funds.
In 2018, Ukraine was officially given an aspiring member status.
In 2021
NATO reaffirmed that “Ukraine will become a member of the Alliance with the Membership Action Plan (MAP)", which is the most traction on the topic since 2008.
In parallel to all this, joint military exercises and arms shipments have been ramped up.
I found this old article from the Ukrainian perspective to be informative:
https://euromaidanpress.com/2021/06/15/the-2021-brussels-nat...
>But the more the merrier - you have another ally you can at least half-count on the safer you are.
This seems to be the critical question. I think that current NATO members are safer without expanding east. I certainly feel that way today! In the future, I don't think conflict is less likely if Ukraine joins NATO and there are more us missiles and troops stationed on the Russian border.