Well, if I am trying to flush blind hexes I want to drop A4-Inferno. Setting the place on fire tends to make people move.
But I started off saying what a lot of posters have . . . the Kozice Valley map really lets the ComGuard's conventional forces dig in against the Clan's mostly mech forces . . . and range is not going to help the Sharks. Demolishers, Hetzers, SRM Carriers, LRM Carriers, field gun platoons, Manticores, Zhukovs, Prowlers (woo Amphib!), hovertanks, VTOLs- to defend that sector, I just do not see Focht assigning too many mechs. Conventional forces absorb the Shark's rush, then push a counterattack of jumping cav mechs and hovertanks to get around the flank of the Sharks.
Makes it easy to see how Omega had to go break them out- Alpha and Beta's clusters would not be able to break contact in that type of terrain, or even cut enough forces free from the press to the front to clear their back area to withdraw.