I’m not the only one to ask them to reduce the range of BRs available in a given match. I’ve also suggested that some matches could be set up where everyone in the match was top BR, rather than having lower BRs added in. Lots of the folks running max-ranked vehicles seem to object to this idea, but both of these ideas would make things less grindy for the rest of us.
The problem is that, while there are changes that could make this game a lot more fun for everyone, keeping things grindy encourages more spending of cash, which is something the developers love.
In the meanwhile, there happily isn’t a law that says you have to spawn in when you’re the bottom tier. If I have a heavy tank ready to go, but the spawn cost is 100 SP, I know I’m bottom rank, and frequently don’t bother spawning. (If I’m trying to get mods for something other than a heavy tank, I might still spawn in, but it depends on what I think I can do with the vehicle in question.)
No laws either that say you have to stay in the match after your first death. If you feel the CAS balance is wrong, that first spawn time is the least threatened by aircraft. Even while doing 1DL, I have had my first death in a match come from the air, but after that first death, the chances of CAS coming for you go way up, and fast. Especially if you’re having a good match on the ground.