Resetting works out fine I find if the following criteria is met:
-You've used up all entertain you find worth it that you could have reached in a reasonable time frame
-You've got set plans exactly on how you're gonna play the next round. Not knowing what to do makes it really irritating and slow in comparison to previous growth pre-reset otherwise
-Optional: Got all your planets and arts lined up to be regained after reset. Makes regrowth a lot faster, and more efficient than last time. The first few days will still be the slowest and most boring slog though
-Managing to stay in the same legion that has supported you pre-reset. If they don't want you if you reset, well then, find a new home first before you do that. It helps to have people interested in what you're doing so you can discuss options with them, give valuable intel on what being a low rank is like nowadays (which helps in deciding how to help the true newbies joining your legion) and just have amusing banter about what its like returning to the bottom.
-You genuinely want to reset to take a new spin on the game and not just because you're bored with what you have atm. If you aren't invested in rebuilding a new way it won't be enjoyable.
Just a few points I've told other people that asked me before if they should reset or not. That aside, you probably already know about all this, but if not, glad to have helped. Cheers, and hope you enjoy whatever path you eventually settle on!