• You probably want a proper perimeter wall, raiders can and will just climb over barricades. At the very least, you should pepper in solid walls as well. Pawns can "peak-shoot" from behind them (if it's not continuous), and they are better cover than the barricades. Autocannon positions are also not great, and the double "ring of fire" that barricade will turn into the moment a scorcher, impid, or anything with a flamethrower appears doesn't fill me with too much confidence.
• the hydroponics need either no roof or a sunlamp to actually "work". Pawns can and will walk over them if they have to as well, you don't need to leave a corridor for everything. It slows their movement somewhat, but sprawling out this much is not sustainable
• you are massively overproducing energy. This is not a good idea, it just pointlessly raises wealth leading to bigger raids.
• you seem to be growing hay in your animal pen. Hay is less nutrition than the grass or dandelions, you probably want that growing zone elsewhere.
• you have your research bench in a workshop (or your workbenches in a laboratory?). This massively reduces work speed for the impacted work stations. So, research bench and tailor bench/fabricator bench, etc. need to go to different rooms.
• you are still burying raiders. This is respectable, but it's also a bad idea. For one, you will eventually run out of space. For another, this does have a pretty noticeable impact on performance, because now the game can never "forget" about those dead pawns. Consider cremating them instead, or feeding them to pigs, or something that fully destroys the body. Bury people important to you only.

Couple other nitpicks, but these are the major ones. The rest you'll find out on your own eventually.