While I have had limited exposure to the electronic system, it seems to be a solution in search of a problem and one that is not very well thought out.
Please understand that my perspective is that of a parent watching my 6 yo daughter compete (competing as a 7 y.o. under USAT rules). She used the LaJust hogu in Columbus for the Ohio State tournament.
We were lucky in that we did not have to pay a rental fee and hogus were provided. First they placed size 1 protectors on each girl. They both swam in them. My daughter typically wears a 00 hogu. Lajust lists Size 1 as their smallest size on their website. Someone took pity on the girls and came up with two size 0 hogus. They were still big and bulky but the girls managed. Luckily enough they were not required to wear the socks.
Next the officials adjusted the sensors in both hogus according to the girls' age and weight class. I am not sure if this was comical or sad. The official had both girls kick each other to show them how hard they would need to kick in order to score a point. Both girls had to kick each other repeatedly over and over again to the point where they almost knocked each other over. Finally, if the official held one girl up while the other kicked, a point would register. Needless to say this completely changed the nature of the competition.
In other tournaments, without the electronic vests, ring officials can make intelligent decisions and concessions with to help younger athletes compete and grow. Points can be scored based on the skill of the athletes involved rather than on whether one of them can kick harder than the other.
Next, I have read in some "official" USAT postings that all athletes would be required to purchase and bring their own electronic hogus to tournaments in order to compete. While this is of course a huge financial issue (especially for growing children) there is also the problem that while in non-electronic scoring matches USAT rules allow each competitor to wear a hogu that fits them, USAT rules require that each competitor wear the same size hogu when a the electronic hogus are worn. So, thank goodness for the rentals available, but this also brings up the possibility of having your own electronic hogu, showing up at a tournament and being required to use a rental in order to have the same size as your competitor.
I really despise the idea of rental equipment for athletes. There are days my daughter doesn't want to wear a piece of her sparring gear and I tell her she needs to practice in all the gear she is going to compete in. With the rental hogus, she will practice in a standard non-electric hogu and be forced to wear something much heavier, most likely too large and ill-fitting when she goes to competition.
As for the socks, I have heard a lot about how they change scoring and techniques. My major problem with them at this point is that my daughter will be "required" to wear them next year at USAT tournaments. Currently she wears a child size 11. There is no way a men's shoe size 3 sock will fit her. I have hopes that we will encounter officials next year that realize how ridiculous it would be to require electronic socks be worn when LaJust doesn't make one that fits. However, it has been indicated that part of the issue with the disqualification of the Taiwanese athlete at the Asian Open (it has been reported that the old style sock fit her and the new style was too big).
I know that the issues about equipment being too big are not concerns for most practitioners, but it is annoying for those of us who have to deal with it. It isn't as if the USAT overlooked the issue of young competitors. The rules exclude 7 and under from wearing the socks.