There are tiny differences when "delayed death" units (Outlaw, Limpet) die compared to others:
wreck does not inherit velocity. Could do it manually or wait for this engine feature.
fresh wreck does not smoke. Not solvable via Lua atm, requires either this or this.
targeted orders (e.g. repair) aren't dropped immediately and you can see them point underground for a bit. This works for tacnukes (who use a different script than outlaw etc) so just copy that over.
homing projectiles get confused, see #2214. It has its own ticket so I'm just listing it here for completeness.
There are tiny differences when "delayed death" units (Outlaw, Limpet) die compared to others: