I think perhaps they meant priority security lanes (the express lanes)?
In which case, LTG isn't going to cut it.
Exactly.
Priority check in is essentially meaningless now we can check in online.
The only time I do use it is when there is a dedicated F check in service as in MEL.
And you need platinum status for that.
Priority boarding doesn't work, and I generally prefer to stay in the lounge as long as possible and board last, anyway.
Although that can become a problem if they are using only one aero-bridge for boarding a wide body.
As for the alternative of retaining WP every year, there are two issues with this.
The first issue is that this argument applies to any lifetime status level, not just WP. So it doesn't address the threshold which is specific to lifetime WP .
The second issue is that most of us would like to stop working before we die, and for most of us that will mean reducing our expenditure a little.
So the realistic prospect of qualifying for lifetime status is attractive. This applies to every status level but it is only lifetime WP which sets such an inconsistently high threshold for qualification so as to seem unachievable and manifestly unfair.