The game getting better will depend on how much you're into story in a game. This game has a fantastic story even if it gets off to a slow start. If you're not into story, it will be harder to appreciate the game.

On the subject of aether currents, they were originally placed to encourage players to explore each zone. There will always be 5 aether currents per zone earned through quests. Older expansions will have another 5 per zone to learn through exploration. The current expansion has 10 to learn through exploration, though that should be reduced to 5 when Dawntrail is released (then Dawntrail will likely have 5 quest and 10 exploration).

The trick to getting them with a minimum of difficulty is to do them as you progress through the MSQ. The exploration currents are placed along the route of the MSQ (or the quests that teach currents) and you only need to travel a very short distance from the route to get the ones related to exploration. If you wait until after you finish the MSQ for the zone, you'll have to re-travel most of the zone to get them.

I have a spot on my hotbars for my Aether Compass so I can easy use it as I'm traveling from quest to quest within a zone. I drag the icon from the Duty>Collections window to do it (may not be as practical if you're using a controller and cross hotbars). Each time I stop for a quest objective, I'll use the compass before moving on to see if there will be one nearby, I also check the zone quest hubs to see if any of the "blue" quests that unlock features have appeared (some don't appear until after a certain part of the MSQ is completed).

Do not worry when the Compass indicates the nearest current is several hundred yalms away but you can't get to that part of the zone yet. The MSQ will get you there at some point.

Finally, while it might seem like a waste because you're only getting to fly after you've completed the MSQ in the zone you will be revisiting almost all the zones for the MSQ at some point, either later in that expansion's content or as part of a future expansion's MSQ. It's also very useful when you're doing side content such as gathering, FATEs, treasure maps and hunts (definitely need it for hunt trains).

Also don't worry if you feel like you need a break from the MSQ for a bit. The length of it can be pretty overwhelming and there are a lot of other things to do in the game if you're in the mood for something different.