Okay I posted a few days ago about wanting to know how to change the spawn time on heroes to make death permanent.

So I changed this and it's all good, start playing as the Empire and I lose Boba, nothing I can't deal with.

Later in the game I cannot work out why the Rebellion has not built anything bigger than a Neb-B or not used any Snow Speeders on ground assaults.

I destroyed C3P0 early in the game. The entire Rebel tech relies on that hero which really sucks because unless you are playing as the Rebels you need the hero's to respawn.

Lol nice going, maybe if you gave their tech stealing abilities to other units it would help?

Yeah if they could build R2 units to steal tech or just pay for tech levels themselves that would be much better.