Lysander is not so great as you lose combat tactics, which has improved.
TL normal fire is not that much of improvement,
TL snap fire is great apart from it still will not mean much.
Then sternguard will not always be using their bolters.
I would have 10 sternguard in a drop pod. Then you combat squad into two squads. Personally I like 8 combimeltas and 2 heavy flamers, this means you have a couple of ways to combat squad and you have plenty of shots to take out tanks. Most infantry will be shot down with their bolters, so the combiplasmas are not worth it. Heavy flamers are really useful due to overwatch and generally killing infantry, it is so easy to move away from drop pod to get the template in position now.
Gate is not so reliable, I would take assault cannon with termies as if you gate you should be in range, it is a lovely gun.
I would bring 9 snipers with camo cloak and Telion, just checking the set up.
You would destroy an enemies single stormtalon as they came on, I would bring 3 or just bring more nice attack bikes.
If you want some curve ball suggestions:
Belial+deathwing termies instead of Lysander and the termies, the librarian can deathwing assault with them
Swap a tactical squad for grey hunters. Then lysander for 2 rune priests.