The govt should make amendments to the constitution to grant Non-Constituency Members of Parliament, full rights to vote on Constitutional Amendments, Supply Bills, and No-Confidence votes against the ruling government.
The WP have been attacking the NCMP scheme as not true opposition, because they don't have the full rights of the MP.
Well, give them full rights. Even the right to move for a no-confidence vote against the ruling party.
With at least 1 NCMP in parliament, you know that there won't be more than 9 opposition MPs and NCMPs in total. That is how the NCMP scheme works. If there are fewer than 9 opposition, NCMP can make up the numbers up to 9. But if there are more than 9 opposition, the NCMP scheme will not apply.
That means should a constitutional amendment or supply bill comes up for voting, the 9 NCMP (the max number of NCMP) will not be enough to block the bill anyway.
So give the opposition what it wants. It will cost the PAP nothing.
And if the opposition now says, "of course the PAP gave us this concession, it is meaningless!", the PAP can then point out how the opposition have been focusing on pointless battles without considering the practical effects or outcomes of their pursuits. If they can't see the simple consequences of what is a relatively straightforward matter, what more can they predict the consequences of whatever else they are proposing.