Hello, I am 我求你了，就让我多睡. Here I want to explain why I think removing level system will helpful for BFGA2.
New player will be confused. First they can not see all faction admiral ability and fleet upgrade, so if they fight against it inside the game they can not know why enemy Imperial Navy flag ship can suddenly teleports behind and ram you, or why enemy elf suddenly have so much armor in front. This makes game harder for new player, and also restrict their playstyles because they also cannot use these.
New player will be bored. Warhammer is already not very mainstream games, and so there are less players. If some new player come in and they have to grind a lot of level just to play the factions at full function, they might go play other game that are similar for space ship combats, making the game have even less players.
For showing experience, we already have ranks. What is purpose left for levels? If someone are good and have high rank, nice. If someone is high rank but low level, then other might call them smurf. If someone is low rank but have high level, then it is just shameful for them. You are basically saying "look, he/she play this faction for so long but is still so bad." There are no positive, only negative.
There are no real argument for keep the level beside elitists "I had to farm when I start, so everyone new should too" or "noob need learn to play game with less ability or their little noob brain cannot take it". Later skill and upgrade are not necessarily stronger or harder to use, too.
I hope dev and community can consider these and remove level system.