Ayatan Challenges - yeah, a hard pass on that (too much luck needed).
Survival Challenges - I understand that its supposed to be a challenge but 60 minutes is a bit too long, maybe 40-50 because its more manageable and less about praying to nekros/hydroid RNG.(talking about kuva one there but 60 minutes is still too long, maybe have a normal challenge be 40 minutes and no life support be 30 minutes?).
Friend / Clan Challenges - no complaints there.
Perfect Animal Captures - maybe a bit less? (also the birds are a pain to capture).
Complete 10 Syndicate missions - hmmm good for those that still need to get standing with syndicate but too much otherwise.
Complete 8 Bounties in the Plains of Eidolon - same thing as syndicate missions.
Complete 9 Invasion missions of any type - pretty close to the 2 above but at least the stuff you get is always useful.
Kill or Capture an Eidolon Hydrolyst - not really new player friendly.