What exactly are you needing to re-learn? Personally I wouldn't want things to get stale. I can only shoot up a res with the same load out for so long before it gets boring
One example:
Back in 1.something, my combat builds relied heavily on cannons, as that was the meta of the day. Take shields down, then hit the power plant with cannons. They were one of the best weapons in game as a means to get in close and disable ships. I could manage heat well, because the cannons didn't generate much, but still packed a wallop.
Then 2.0 dropped, and cannons took a HUGE nerf, to being of one worst weapons in game, all around, almost useless, the power plant mechanic changed, and NPC behavior changed.
2/3 of those changes were totally fine and wouldn't have drastically changed the game and my style but still would have contributed to keeping things "fresh." However 1/3 of those changes completely changed my combat tactics and I had to completely change strategies and load outs, which really killed the usability of a few of my ships.
Second Example:
Robigo - I really enjoyed Han Solo mode, and I ran the crap out of it. Then FD removed "Shadow Delivery" missions from the game COMPLETELY. Added the "Snake In" mission type with totally different mechanics that are absolutely uninteresting.
Some people love that. I don't, but there are lots of players who love needing to re-learn the game every 3-6 months.
I get that. I'm fine with changes to NPC behavior, I thought it was great that they get engineering modules. Added new in-game structures and station interiors was awesome, minor changes to existing weapons or modules sure, maybe adding some new weapons/modules.
However FD cannot use a light touch. Their idea of any change is a complete and total 180* turn and a massive turd in the punch bowl.