and here something to the effect that not only artifacts play, but also skills and strategy 
, i.e at the water level we capture ports/islands, the number of which is very limited on the map, each port adds e.g. 10% to our attack or maybe effectivness of each artefact and maybe to make it more interesting, he doubles the pearls obtained in the ruins or produce BG itself ,
We give ourselves an advantage by conquering ports/islands so that we can attack after collect enough ports because we have 50% or more power of attack or maybe 50% more effect of each artifacts working it is better ,
we can make a small addition, if we have 5/5 ports conquered, we can attack whoever we want, then the temple doesn't work, but it would also solve the problem of someone keeping someone in the temple all the time.
PS.
if we have a port, less raw materials and people are needed to train the army because we have access to better transport somehowe like this
ps.2
I think that if there are funds, something like this is better than introducing newer and newer artifacts, but a sea set would be welcome, one that would already be lvl 6, the set would make a difference, but it's also hard to get, maybe some treasure hunting at the bottom of the ocean once a half year tournament or 500 000 BG cost one thing of this set something like this .
TO BE LORD OF NOT ONLY LANDS BUT LANDS&SEAS !!! the culmination of the game
ps3 IF YOU LIKE LEAVE A MESSAGE under the topic