If they can't do an episode where Clark Kent meets batman/Bruce wayne, they should at least do an episode where he meets robin/dick grayson becaus in the comics superman was one of robin's mentors.
In Smallville it's Bart Allen "Impulse" who is the fourth flash (kid flash), Cyborg says in the episode Justice that Queen industries is upgrading him so he might still get what he's missing. The training part is correct though. But hey I find it better that they don't litterally mimic the comics.
The Flash was an adult when he got his powers but in smallville, He was a kid. Cyborg in smallville is also missing a few things unlike, his comic book counterpart, including his Supersonic cannon arm. Also, superman was 18 when he started his training and ended it when he was 30 (12 year lesson about who he is and what he has to do) but in this show, he didn't even star till he was 20.
unfortunateley I know all of these scenes I read a smallville book called arrival and it was the pilot episodes with all the deleted scenes put in so no suprise for me :(