Hey I just stubled around your terrain and will give it a Review. I really like seeing new terrains (terrains have always been one of my favorite mod types in Arma) especially when they fit the Armaverse. Since I can only type 1000 Characters in the comments I thought I open a thread here:

First of, the whole shape of the island is great and fits really good together with the greek islands. The main island looks really good at parts. The vegetation is mostly fitting and I especially like the two Hills in the North. Maybe put a small path up to the radar station on the hill north east?

One big thing I see though is, that all the rocks are oriented the same direction. Try rotating them randomly. It really looks strange when everything looks exactly the same. xD
Another thing is, that the bigger open areas look a bit dull. Place some bushes, some wrecks, some garbage maybe some single buildings acting as Farms. Anything. Right now the open areas are reall boring. Also there are alot of dead trees. xD
Same goes for towns. They are missing stuff to make them look alive. Fences, ATMs, sings...

Aside of some roads that do not connect or overlap in an uggly way (Overlapping is not necessary ugly in general but in some places on here it is) there is only one small thing I'd like to add: Maybe consider some fixing of the alignment of Helipads but also H-Barriers. Helipads should always be flat-ish and have enough space around them. The H-Barriers looks a bit wonky sometimes. (Onpart is in the ground and one is sticking out of the top....)

I like the little harbor area. The ships gives it a nice touch and with some more decorating in the town next to it, this will be one of the more special parts.

Ohhh one last thing I want to suggest: This place is screaming for tourismn. Maybe consider putting down a tourismn area with a hotel and stuff that would fit it. (Maybe remove the military area in the east and use that spot? A map with this size does not need two military bases IMO)

I'm totally aware that this terrain is still in development and that alot of the stuff I just said, might be on your to-do list already. Just wanted to give some advice.
I'm looking forward to see more of that and will give it a try with my unit, when it is a bit more fleshed out!

Many Greetings
Moony