Well a few things to consider is that mmo's are highly time consuming, which is why i have personally stopped playing them, and playing more single player oriented games where the amount of free time you have matters very little.
On top of that as far as i understand, it isnt even the same group that created the single player elder scrolls games, meaning it wont have the same feel as they do, granted this may be me who have been misinformed or misunderstood something.
I havent exactly read up a ton on the subject as i personally have very little interest in an elder scrolls mmo, but i have played many mmo's over the past 10 or so years, and i dont personally feel that any mmo can really be worth the subscribtion fee(unless its very very low), server fees arent as high as they make them out to be, and games such as League of legends and Guild wars 2 has proven that you can easily turn a profit without subscribtion fees, and without being P2Win.