I think it would be a good idea for the Ukrainians to partner with the Poles to rapidly develop long range simple cheap suicide drones. These would adapted from existing airframe designs and mass produced using modern materials and largely unrestricted parts from abroad and use cheap Chinese gasoline engines. They would carry say a 100 pound warhead, about the same weight as a 155mm artillery shell, but with a lot more explosives and a lot less steel They would have a 300Km range at least, would use $100 flight control computers, be somewhat shielded from jamming and could hit their target within 2 meters most of the time. They could use commercial GPS to terrain follow to an extent using GPS and multiple waypoints. I think they could get the cost with volume down to $5 or $10 K a unit for materials and components, most are mass produced for hobbyists. Compared to the cost of a precision artillery or rocket round, this is dirt cheap and they can be made by the thousands for not too much cash by a country like Ukraine with the help of an ally like Poland. Some American or private cash could finance it, compared to the cost of a Javelin or an Excalibur round it is dirt cheap.