Looks better than the trailer vids but I still don't like that green, same green as Gideon. It also looks like they're hitting sprite limitation or RAM limitation on some things. Not enough detail in the background for my liking.
Sprite limitation is hitting only for bullet/enemy count, therefore no crazy bullet-pumping like Batsugun. Since you have to draw the background with sprites too it doesn't matter how the background looks only cart size is the limitation. And here is my lttle problem, instead of really big bitmaps like Metal Slug they used classical tile based BGs. Neo doesn't care how big this bitmap is, it streams it from Rom anyway. Also Ram limitation should be no problem, look at all the gorgeous Beat em Up BGs, thats what can fit in the Ram. Neo really is a streaming beast so Video-Ram represents only what can fit into one screen. All the animations like Garou aren't in Ram at once, they are simply streamed when they are needed. Thats the reason why Beat em Ups are looking so good on neo. Or look at the intro of Srikers 1945, insane.
But I have to admit, i like XYZ
The only weak point the Neo has is its CPU, 12MHz is a little bit to slow for fast paced shmups. Tatsujin2/Truxxton2 (1992) has a 16MHz 68k and it has on top of that classic BG tiling so there is nearly no CPU taxing on those, only for sprites (count/movement pattern). Also keep in mind Neo can generate sprites/stripes upto 8*512 pixels wide/high so every sprite can be like two screens high/big. So Neo likes vertical scrolling shmups (in Hori mode) much more. Look how much slowdown occurs in the second level of Last Resort.
I wonder if it is possible to cram a second 68000 CPU as a tandem in an expansion cart fitting between the Neo and the Rom.