So, here's my take. I like the flash fire, it adds a bit more realism. It may need tweaked over time to modulate the frequency (to many/not enough) vs the modules/armor/ammo type. However, and this is a BIG however, since the current armor model leaves the fore and aft (A and Y in most cases) protected only be the belt and deck EXTENDED armor, not the main belt/deck, these will happen WAY to often. I just did an "Invincible" as close to historic as possible (no 4" deck mount OR casemates available?) and took 2 hits, one in the stern belt extended, and one in the bow belt extended, both caused Flash Fires. The stern hit only took out the Y turret and ~70% of my flotation. The bow hit took out A, then spread to P and killed me in about 20 seconds, which, in and of itself is fine, but these hits should have been on 6" of armor plus 2" of deck curve (at an angle, so ~3.2 - 3.5" effective), not 4" of 'extended belt" armor.
There are 3 rows of 7 'boxes' that the ship is broken in to. The best I can tell, the current armor layout, regardless of how you actually set up the ship, is that the 2 'boxes' on either end are "extended" and the 3 in the middle are "main". The problem is, almost EVERY ship puts the A and Y turret position in that "extended" area. The "main" belt should go from the front of A barbette to the end of Y barbette, and grow or shrink as you move the turrets. This would effect weight, closer together = shorter belt, but also firing arcs would suffer. So, it's a trade off, which is great.
I'm new to the forum, and only been playing the game for a little over a month, so if this has been discussed before (and I'm sure it probably has) excuse my ignorance, please point me to any relevant threads, and please tell me this is something that will be addressed at some point.
Don't even get me started on deck armor....