If honor points never go away the system is already doomed to uselessness.
It takes 180 honor points to cap out your rank. Picture a group of 3 people, A B and C. Each day A gives a point to B and C, B gives a point to A and C, and C gives a point to A and B. In total each person gives out 2 points and gets 2 points. In 90 days all three with have their rank maxed. The same logic applies to a group of any size. For a guild of 30 people, as long as each member gives out every point they get and nobody gives points to someone already capped, the entire guild will be done in 90 days. Same for every guild out there.
Figure by mid July we’ll see many organized guilds having all members capped.
By mid August not so organized guilds will be capping out.
By the end of the year the system will be pointless as everybody will be at max.
If they add a degrade to it, so you lose points over time, then there are three outcomes:
You lose 1 point per day (or less), and it just prolongs to the time cap out by 50% and requires daily action to maintain.
You lose 2 points per day, and the system is zero-sum, meaning nobody can gain without someone else losing.
You lose more than 2 points per day, and it is pointless to try as you decay faster than you can gain so everybody trends back to nothing.
Overall, the system is short sighted, poorly designed, and fails to meet the intended goals (a way to thumbs up people for doing something positive)
How I wished it worked - 4.3 Update (Patch Notes) - #246 by Rasper