Well, firstly ill address the fact that sim battles are very boring in general, it takes too long for objectives to spawn, and most of the time they are either only bases or capture zones, the complete lack of objectives for all types of gameplay styles makes it an boring gameplay where your either only going for pvp and flying for 10 minutes to fight 1 singular dude and then rtb bc your out of fuel.
Also once you get those convoys for example they most of the time are inside the ground where you cannot see them …
secondly all the spaa’s on this gamemode are stupidly precise, some planes can deal with them if you know what your doing, which is great, unless your not on one of those planes, and example i like to use alot is the AMX, sitting at 11.0 you cannot fly high to use the laser guided stuff, specially now the sparrows got a buff, so what you do ? simple, you give up.
I really enjoy sim battles because they could let planes that are absolutely abysmall to play on rb, be fun and enjoyable to fly with, but those 2 issues there make this gamemode not so great. And while im aware of the tests with the NE for sim battles, the same second issue is present there and maybe even worse, where you not only cannot fly higher because of other players but now because an s300/buck will be shooting at you constantly.
Sadly probally noone of those issues will ever be fixed because people dont play sim battles because of those issues aswell.