Same for first few servers on HK.
S26 have only 5 groups participating in GNW (actually there are only 2 competing groups. 3rd group is always 3rd and 4th and 5th groups are just weak). Next servers - 30, 31, 32, 34, 36 have 2-3 active groups each. We see some competition only in XGNW and not even every time.
Closest merged server group on HK region - S42, 46, 50, 54, 58, 80, 84, 86, 90, 94, 102, 106 - have very active gameplay, more then 10 groups in GNW.
Lowest power player in this merged server group in top 100 have 127k power.
On server 26 lowest in top 100 have 90k power. Lesser on servers 30, 31, 32, 34, 36.
Of course I can't say that S26, 30, 31, 32, 34, 36 are DYING, but gameplay becomes more and more common and monotonous, everyone knows each other - everyone knows who can beat someone and who doesn't.
We really need to be merged with servers 30, 31, 32, 34, 36.
P. S. Obviously first servers have some huge spenders each so I think it's an Oasis's interest in not losing them.

I have an idea how is the situation in the merged servers but it's not the reason why I can't try to make my own server more interesting by asking for merge.