I'm going to tell you the story of what happened today while I was playing with my brother in this game and I hope any devs weighing the situation will consider this story for why server migration should be kept.
So my brother and I got on and we just got some new sails, specifically the Warsmith sails that make our sails look like the Devil with a Spear lol.
Anyways we sank a few ships and got our ship up to Reaper tier 4.
Suddenly my brother shouts out "I see a sloop!" and we notice that the sloop isn't alone. He has a friend and both of them are gold hoarder tier 4.
So we approach them and suddenly a volcano erupts nearby us and hits our ship, bringing our mast down. Well we think we're screwed now since we're close to them and they'll probably shoot us down and sink us now.
But miraculously, they all came onto our ship and helped patch up our boat, and bailed us out. Then we told them that we're actually "good reapers" and that we hunt the "bad reapers". Surprisingly they bought our story and we all played music together for an entire song.
Then we agreed to go and fight the world boss together. After all, 3 sloops taking on the world boss with 6 people could handle it right?
My brother and I communicated verbally with the two gold-hoarder ships, but non-verbally we knew we were going to betray them, and getting them preoccupied with fighting the world boss was the perfect way to do it.
So we rolled up, and then lo and behold we see a 4th sloop. Who shouts at us "please alliance, please don't kill me"
Oh we planned on killing him alright, but we used the megaphone and shouted at him "Hey bro it's fine we're gonna do the world boss too, you can join us! See the two ships with us? We're all friends!"
Well my brother goes onto the island to help them fight the world boss while I shoot at the boss with cannons. But what my brother really does, is grab a gunpowder barrel and says he's going to use it on the world boss.
Then he moves onto one of the gold hoarder ships and blows it to smithereens. What ensues is an epic battle with high stakes and high rising emotions as they shouted at us "YOU'RE BETRAYING US AFTER WE HELPED YOU" and also other obscenities were shouted due to them being very mad.
Anyway the fight felt epic and we felt like villains, because we were. One ship was down, but we had to fight two other ships. So we did our best and through clever tactics and the fact that they were caught unawares we were able to take them both down.
One of the players escaped on a rowboat with his tier 4 gold hoarder flag in the chaos, and we tried to chase the rowboat down. But we realized that the 3 other ships had respawned and were going to come try and get revenge. So what did I do?
I was unable to get the loot, but successfully killing them and betraying those guys was too sweet and we wanted to get away with our evil deeds. So I went below deck and activated the tall tale checkpoint. Opening a portal.
The three ships chasing us were RIGHT ON OUR TAILS, they were RIGHT BEHIND US and we were racing for the portal as they hunted us down. We kept shouting at them and using our megaphone to do an evil laugh as they chased us.
"WE BETRAYED YOU. WE GOT AWAY WITH IT! YES WE ARE EVIL. ITS CALLED SEA OF THIEVES NOT SEA OF FRIENDS!" etc
At the last second, we managed to get through the portal and escape, and man I have to tell you. The cutscene at the end where the sunrise comes over the water felt absolutely amazing and epic when we arrived in our new server.
We then proceeded to kill two more sloops, turned in our loot, and then we rammed a reaper galleon before logging off for fun.
So yeah I think server migration is pretty cool and I think if there's problems with it, maybe don't get rid of it, but add something that helps people against reapers I guess?
Anyway, thats my two cents. I think there's a lot of sore losers in this game who don't understand that the spirit of the game is pvp and piracy and betrayal.