I'm quite surprised to see the weight requirement is 50T instead of 55T. I'll bet there will be a huge number of DEC applicants with no time in anything larger than ERJ190/195(over 50T but under 55T). They must have selected 50T with that in mind.
What other modern, EFIS/FMS equipped jets are over 50T but less than 55T that they could be trying to include? I can't think of any. 717IGW maybe, but not sure.