I'm going to criticise your list heavily
And in doing so I might look stupid to you because, since you mentioned that this list is a tightened version of your own 2k army, you probably know more about this list's mechanics than I. So, if you have some solid counter-arguments to the points that I'm going to make, please by all means share them, as I'd really like to hear some alternative experience.
Also please note that all my comments are made from a strictly competitive standpoint.
On to the points...
1. In my experience no Eldar army can be truly viable on a competitive level without Eldrad Ulthran. For the last couple of months I've been preparing for a heavily competitive tourney where all named characters are banned; so I tested multiple 1750 lists (mech mostly) with just generic Farseers and Autarchs, and the performance of those lists is... sad, to say the least. The only exceptions are lists based around jetbike Council...
The anti-psy stuff available to the other armies only widens the performance gap between Eldrad and a generic farseer: even when a hood or a rune weapon is present, Eldrad's chances of getting off a critical power at the critical moment is much higher. Thus I believe that while the abundance of anti-psy stuff might be a reason to leave generic Farseers at home, it only gives you more reasons to take Eldrad. I'm saying this because ultimately most Eldar units (all of them except Dragons in fact) cannot compete without psychic support; they are simply outclassed way too often.
2. Yriel on his own (i.e. without a supporting Doom/Fortune-seer) is quite pathetic to be honest. Even his eye-bomb is only really cool when it can take out a whole unit at once, and that is hardly possible without Doom. And in regular combat he usually falls faster than you can say "ouch".
3. I'm not sure I understand the purpose of having 10 guardians on foot in an otherwise fully mechanised list. I doubt that it's possible to properly support that unit in order for it to accomplish anything.
4. A naked Prism is so weak in all respects that I really don't think it's worth taking at all. Not at a competitive level at least.
5. Last but not the least, I have problems picturing for myself how this list will win games. It has no melee element to speak of and its firepower is very far from being ultimate enough to decisively kill units by itself, especially seeing that dragons in that loadout are rarely going to fire more than once.
Perhaps you could share your ideas about the list's intended tactics as well as your likely opponents?