Israel needs to develop a small bomber capable of delivering small diameter bombs (SDBs) at high altitude. Some types of 250lb SDBs can glide 70 miles to their target, which means that Israel could hit targets throughout Lebanon, and much of southern Syria without even crossing the border.
They have the F-15E, which is probably the best small bomber available. It would be too expensive for them to develop a new bomber, given that they would need to rely on the U.S. or Europe for engines and other major parts.
They already have 250lb version of the SPICE munition, but its significantly more expensive than U.S. weapons.