Honestly speaking, even though I'm not going to pay I'm still warming up for the sub fee now that some things have been explained.
Basically knowing that some of the things they've been working on to appeal to the current players will be going to dumpster once 2.0 arrives must have been a tough decision to make.
I wouldn't be surprised if they had the other option to simply adjust the current build with features that will be moved over while working fulltime on the 2.0 build at the same time.
Knowing that they are working "extra" for the sake of the current playerbase, which is by no means large any way you look at it, and knowing that the current players must somewhat enjoy the game to keep playing it even in it's current state, asking for a fee is not really unreasonable.
Of course going with the other option would have meant more free playtime for all, but on the other hand the updates up until 2.0 would have been rather lackluster as well, so with the free playtime also comes less quality content. So, both have their advantages and disadvantages, and it seems they came to a decision that making the experience as good as possible to the current players even if they had to pay for the extra expenses, was the way to go.
Of course this is just me, but honestly speaking if we didn't have to pay a dime I wouldn't expect all the extra content either. Since either way we are getting the 2.0 build for free, and we have played for 15 months free as well. SE has nothing to prove as far as appeasing the playerbase goes, now they need to get 2.0 out and make it good. That's the best thing they could do to fix their mistakes for all of us.
If some players still think that after 15 months of free playtime they still haven't gotten their money's worth (plus a free game once its done), regardless of the quality of said playtime the quantity should more than make up for it. Lets face it: If there was nothing enjoyable about playing this game you wouldn't have done so for the past 15 months.