I have just fast tracked myself from relatively in the dark about our kids to absolute expert using the wonder that is Youtube, just watched about an hours worth of highlights from various games....
Wil give my now expert analysis

on a few players
Plessis, big strong and contrary to what somebody else said he is not similar to Sissoko in touch or passing, he has an assured touch and a decent range of passing although he does generally play the ball short and easy, cant help but think he is being groomed to be a centre half though, very defensive minded midfielder at this stage but promising.
El Zhar, extremely tricky winger, pacey with an eye for goal, wether he makes the step up is another matter but for some clowns to completely right him off as he has not "stood out" in any of the games he has played for the first team so far is laughable, he will need time and games like they all will but he has a chance as he carries a goal threat and is something different.
Nemeth, took his goals well and does look like a young Robbie Fowler, not going to over hype him tho as some of his goals so far have been soft to say the least, time will tell but he does look a natural talent, lets see if we can groom him properly, he has a chance!!
Leto, this is a lad a i really rate, he looks a class above reserve league standard but when he has played in the first team he has struggled to make an impact, but thats understandable, he is young and new to the country playing, he has a great touch and eye for a pass (See his ball to Nemeth for a chance Nemeth had saved in the mini derby) and he has some pace, given time and confidence i really think this lad will make the step up to the first team.
Bruwer, to be honest he doesnt look much from what i saw there cant see any outstanding attributes, but thats not to say he doesnt have ability, it may be that he is still adapting, again we seem to forget these lads have moved to a new country and are no doubt missing family, friends etc and some will need more time, this lad needs to step up quickly now tho if he is to earn himself a new deal IMO.
Insua, didnt see a great deal from him defensivly as generally we seem to be on the attack in most reserve games but he seemed very willing to get forward and get crosses in, he did seem to have formed a decent understanding with Leto and that can only be a promising, obv he has a chance, as full back IMO is a position where you can give a chance to a bit of youth and let them show there goods.
Thats about all i can comment on from limited highlights and clips i have seen as the defenders never get a look in as we are always attacking, although the other CM (Spearing??) does look a v good player he will need to develope physically to stand a chance as a centre mid.