1) if they are beating gap always (mileena gets a free roll on that gap) yes exwp or you are guessing with less options . you are always at risk on blocked wp from njp or low poke or armor and in alot of cases the risk/reward is in their favor .
in corner you can get up to some pretty nice dmg with and without meter after wp so your options are alot better there and they probably hold block more .
2) thats character specific cassie can ex flipkick away and you will get punished for canceling into sf-wp or you can sf-parry it will miss your parry and you get a free fb or she will rego flipkick and both options win for you . downfall to exwp-sf-exwp it can be back jumped full combo punished so unfortunately you have to out think them but your options are far better after exwp (not a free punish ) and you get almost all your meter back so why not right .
3) dr is safe but can be low profiled , wp is great if they are trying to armor you or low profile , delay wakeup and try parry is hard to do .
all 3 get destroyed by njp but if you see njp dragon kick wins . lk like everyone else struggles against lao on knockdown
fb and iafb are amazing in ff also you get easy big dmg on corner combos or hard to do huge dmg corner combos .
most inviting variation to start with kang my