This is from an outsider perspective so I might be inaccurate in several place but this is my view of what have been said.
If you want to put things in perspective you can compare this world to EN13 since EN13 havnt been open that much longer than EN14.
EN14 (2 contending tribes for world domination))
Rank 1 tribe (The dominant tribe)
TEN
Points: 102 mil
Villages: 12 721
Total bash: 521 mil
Members: 199
Rank 2 tribe ("The Threat")
PSX
Points: 35mil
Villages: 4642
Total bash: 158 mil
Members: 122
EN13 (3 contending tribes for world domination)
Rank 1 tribe:
BH
Points: 96 mil
Villages: 10 893
Total bash: 829 mil
Members: 94
Rank 2 tribe:
RLP
Points: 84 mil
Villages: 10 305
Total bash: 550 mil
Members: 159
Rank 3 tribe:
Bzb
Points: 58 mil
Villages: 6855
Total bash: 348mil
Members: 94
Your rank 1 tribe have less bash than the rank 2 tribe on EN13 but yet more points/villages/members than EN13 rank 1 tribe. If you compare bash between individual players you will see the same differences. Rank 1 in bash on EN13 have 62mil with 40mil O bash/20mil D bash, rank 1 in bash on EN14 have 16mil bash with 4mil O bash/12mil D bash. EN13 is quite war filled and always have been so the bash is a bit extreme, point being the bash so far on EN14 seems very average for its time duration since it opened.
The second point you brought up was inactivity. Im going to just assume the rest of ASH (66 players) are inactive and roughly estimate that both rank 1 and 2 tribe have about 25 co-oped accounts. That leaves about 250-275 active players yeah? Then we add another 50-75 members on top of that from all the other smaller tribes soooo (My math is shit by the way) rough estimates 300-400 active players I think
EN13 (this one I play myself so will be more accurate). There is about 20-30 co-op account in BH (rank 1), the rank 2 suffer by ton of inactivity so I would assume maybe only 60-80 active players, Bzb (rank 3) about 95% of their growth comes from their top 40 players. . About 20 - 30 more players from the remaining tribes, in total about 180 - 230 active players. So here as well EN14 inactivity seems quite average to the time the world have been open!
Overall conclusion:
The way I see it this world could of easily been won through war considering the size advantage TEN have, EN13 is a stalemate because if BH wants to win thats 17k+ villages + inactive in need of nobling if RLP and Bzb (allied vs BH) wants to win they first need to beat BH then they need to beat each other for percentage, thats a true never ending battle
All im saying is I can understand if you want to end a world if the majority of both TEN/ASH have gotten bored of the game, that is a valid argument, but I think if you expect other worlds to hold less inactivity or that this world have had unusual many wars you might be slightly delusional
Either way I respect your decision if the majority was for the merger and I think its great that you are discussing the decision made back and forth here without any hurt feelings, so you get all the kudos for that