I wouldn't say that this site is super engaging but the question is if it needs to be. Games like this one rarely are, and in my opinion doesn't have to be. This is the type of game you vist a couple of times a day to check on things, look in the forums and maybe post something there.

While I see what people are saying about Patreon supporters having an advantage over free to play players, I personalty don't see that as a huge problem. Sure it would be nice if everyone could stand on equal ground but in the end this is a game, not an arms race. Does it really matter if some people spend money and get things done faster? As long as all things the site has to offer are achievable by any player that is.
I completely understand why some people would get upset by the fact that the Patreon supporter have early access to features, I personally view it as they are paying to be beta testers and making sure that everything will work correctly when the rest of the players get access to the feature. I rather have that then buggy features being released to quickly.

While the game is slow, that doesn't inherently has to be a bad thing. For me personally it is nice to have a game where you can slowly work towards something, making little but steady progress at a time. It is a welcome contrast to a lot of other games where you feel the need to get things done quickly. Sure, there is room for improvement but the site is still new and there is plenty of time for it to improve.

At the moment i feel like the place where this site really shines is the forums. Now a drays it's rare to find a relatively small community full of nice people. Almost every time i go the the forums i recognize most of the people who has been posting. It's nice to see that most of the time there are som new posts and topics but not an overwhelming amount that you see on bigger sites like for example Flight Rising where the community is much larger (i love the FR community, don't get me wrong).

To sum up this mass of text: this type of game doesn't necessarily have to be engaging in that sense and can afford to have a slow pace.

I can see myself staying here for a very long time.