Lapid has suggested that an extra 15% of people serve, with everyone serving two and a half years instead of three. That way the army will not have too many people, or waste money, but the burden will be equally shared.
The army would obviously prefer less people there for a longer period of time, this will svae them money on training, and the average soldier will be on hgiher standard. However lapid system will allow for more reserves.
I am not coming to justify lapid in any way, however I am responding to the OP’s question.