The first (open) MG-Exploit for us was available 7Months ago.
You can´t expect all features of a CFW in such a short time.
Also there are just a few persons, who really contribute in a way...
I hope for more ideas and solutions "how-to" realize things and that you keep in mind that a few features are not as important (I think), as a few other might be...
A solution for your idea,... (Coldboot-Screen&so on...)
There are more than only one.
The PSP e.g. can play a video-file with a plugin (and I think, that was an rather old method...).
Another way might be to hack the original sequence,...
But is it worth it (yet)?
PS2 V7/DMS3 V2 (FW:2.4b7); Seagate Baracuda 200GB
PS2 V7/CC1.0 (FW:34 hacked v2 BM:2.1.6); Maxtor DiamondMAX9 PLUS 160GB
PS2 SCPH-30004R; NoMod+NoLaser
3xSony MC 8MB
MAX/Datel 16MB with Boot-CD
Custom FMCB 1.8b+ Beta-Build, my AIO 0.5, Sony&xRhino-Linux