I'd like to add in my voice about this return edge on the visor as well. I've been looking at alternatives to the Hasbro, and many offerings (fiberglass, 3d print) have said that they've been approved but they don't seem to have a return edge.
Since the CRL doesn't state this requirement, I really don't think that local GMOs are looking for this detail. I could see it as a requirement for detachment lancer status, but for basic approval of a Hasbro Black Series, I'd be willing to paint the nose speaker, fix the ear vents, and hide the battery component. The Hasbro seems a very accurate and recognizable option for the price point and a bit of modification.
Are there other aspects which might dissuade us from using it? Based on review videos, I am somewhat concerned about ventilation with the close fit and all the padding. The built in voice changer is a selling point for me on paper, but I wonder if it holds up to other voice maps like an Aker etc.
Has anyone tried trooping an event with a Black Series? We've already got a modification report, but a trooping field report would be really beneficial.