Suggestions

1:Add redstone tools in /shop the things we need are dispensers,observers,redstone dust,repeators,comparators,pistons,sticky pistons,ladders,scaffolds.
2:Solution for as you call it ''unraidable bases'' eaither reduce the allowed buffer from 20c to 12c or keep it 20c buffer and increase the power per player since with this power a faction can not even claim a 20c buffer,.. See more