^^ Super interesting ideas, thanks! I think Jormungandr is the winner there - unfortunately the Kraken strategy is illegal, as you can only put models into the T-Cyte if it's starting in the Hive Ship - if you start it on the board you cannot put models in it.
Stranglers + Lurking maws seems to be a winner there, or even venom cannons as they desperately need the rerolls. Interestingly you could put a tyrant in it, have both land in T2, then cast lurking maws and both get rerolls vs the target unit.
Shooting in combat is the other issue, as both stranglers and venoms are blast, so you can only shoot with the Deathspitters - possibly a reason to leave those on?
Behemoth might be good to use it as a overwatch screen when it lands - land, drop summat off, then charge it into the opponents shooty units.
I can also see this possibly as a (an expensive) way to protect an Exocrine, or get it into a good position, drop in, then pop off the Exo strat to get +1's to hit etc.
It's unfortunate that universal access to strategic reserves has weakened this unit somewhat, I'd expect a large price reduction in the codex, or some melee ability.