I don't think being unmanned will change much in terms of basing requirements. You still want to deliver the same weapons to the same targets with the same warh

I don't think being unmanned will change much in terms of basing requirements. You still want to deliver the same weapons to the same targets with the same warheads, and that will take an aircraft of roughly the same size, weight, and fuel capacity to carry. You may not need pilots, at least in the aircraft, but you still need a big groundcrew to service engines, mechanical components, control computers, weapons and fueling, radar, etc. And you'll still need a big collection of spare parts, plus fuel and weapons. What you get is the ability to stay aloft for longer, since no pilot needs a break, but you're still limited by fuel, albeit with ariel refueling, and weapons, if you're actually going to carry out attacks. You also get increased maneuverability from not having to keep a pilot alive and healthy, not sure how much that will help anything though. Maybe they'll be able to dodge missiles a little better? Probably the biggest change is that it's much less politically provocative to shoot down a drone, and much less politically risky to lose one, so they may be deployed more readily and in larger numbers.