For block-height ties, prefer the block whose locally-observed arrival time is closest to its internal timestamp.
Creates big incentives to screw with the subsecond accuracy of the network times.
How so? Also, assuming most nodes use a reliable out-of-band time source, who benefits from inaccuracy?
The 'true' time is a cooperative focal point that's hard to displace, barring such a large conspiracy that you're screwed anyway.
Has the anti-convergence property where if a first block is announced with a bad time you can keep trying instead of moving forward and you'll be sure to replace it unless you end up with a race with a child of it.
The point of anti-selfish-mining tactics is "anti-convergence", on chains preferred by the attackers. So suppressing "first blocks with a bad time" is a feature, not a bug.
Join the cooperating consensus, use the true time and broadcast any blocks you've mined (or chosen to build on) as fast as you can, or suffer.