I'm actually really liking strikes this edition. Far more than 7th. The new stuff coming out may start to reinforce hordes, now that Orks and even Astra are doing it. I wish I had the luxury of more than 6 CP's and a large squad of strikes to annihilate that stuff in one shot. It would be a game changer for me.
I'm still not sold on the Stormraven. I know it's good, but really feels like an eggs in a not so concealable basket. I still prefer a Landraider Crusader.
Strikes are great verse hoards with no armour save/6+ saves. Think poxwalkers and generic orks. However, the higher the armour save, SB become significantly less effective. Against marines, you might kill 4 with a 10 man squad, if they are in cover, you will kill two. Similar applies to struggling to killing orks if they run invuln shield + FNP.
Our only counter to them is astral aim and a 2cp strat. This means that it's limited to one squad per turn, even in a 2k game, which makes spamming strikes ineffective.
As for SR vs LR, there's no contest. SR wins every time. More guns, more manoeuvrable, a little less durable, cheaper is every regard. As for LRs themselves, Godhammer > Crusader > Redeemer. Godhammer fills part of the anti-armour/toughness issues we face. Crusader is pretty crap, we don't need any more S4 AP0 shots. Redeemer is even worse, with the 8" range flamer.