Basically this, yes.Warding if you're taking a lot of hits. Menacing if you want to save on Emblems.
I always use a swarm of ufos, because if I'm building in a place with a high spawnrate in expert mode (I.E. jungle) a dragon usually isn't a robust enough defense system. Also why would anyone use mobility accessories? A shrimpy truffle or static hook is usually enough...A stray stardust dragon, but who needs more? The slots are for the solar mobility and building accessories.
Lucky is my favorite modifier, but usually I'm unlucky and get menacing or warding first so I just roll with it. I do try to get menacing when I am playing magic class though, because I like to end battles quickly in that class.Lucky is a better modifier than Menacing, as the extra crit chance offers higher DPS, I try to balance Lucky and Warding 50/50.
Actually, lucky is an equal dps increase to menacing with a greater standard deviation. Seeing as it improves your damage by 100% 4% of the time it ends up boosting your dps by 4%, which is identical to menacing. However, it does have greater potential than menacing as it can affect your dps by drastically increasing or simply having it remain the same depending on your luck. It's really personal preference as to which you should use and the only real factor in picking is how much trust you want to put in rngsus.Lucky is a better modifier than Menacing, as the extra crit chance offers higher DPS, I try to balance Lucky and Warding 50/50.