At least up until May, no. So not for the next 10 months at least in the English version.
There's just so many mythos to pull from, I guess they just weren't popular enough and DMM just forgot about them.We don't know how the raid system works these days, but for certain, it doesn't work like that. It used to send out to everyone who was:
1. logged in when you sent it
2. was +- 20 Ranks from you
3. didn't already have 10 raid requests up
But that's changed, and I've seen requests from wayyy lower ranks than -20 from me. But it doesn't happen often... so, it's a mystery how it works. Oh, the same thing applies to friends, except that change #2 to "is on your friendlist"Well, remember to keep sending the help requests every 10 minutes. Even if nobody public gets to see your request, a friend might've logged in and might be inclined to help you.
But, most importantly... be in a competent Union. You can't re-request a Union help, but that's because you don't need to! Once requested, even offline Union members can join your raid once they login. That is by the far the most important aspect, even more so if you communicate with your Union members somehow... which today tends to mean Discord.When you're still new, go ahead. But as you power up, Dakki won't do any damage herself because your weapons won't power her up. Use Water Assault weapons for your Water team. Or off-element SSRs when you're still new.
But don't use SR and R Water Eidolons. Only the MAIN and FRIEND Eidolons matter, so the rest are just for stats. Since even 0-star SSRs have so much more stats, use whatever ones you got from events in the five sub-slots.
EDIT: Oh right, Iluyanka requires you to use Water Eidolons for the boost. Hummm. I guess you don't have better, so you'll just have to suffer through some really pitiful base stats from Eidolons for a while...