So I gave it a try to test ICS for nexus one I got to say i love ICS and N1 still can handle ICS works like a charm even though it has some bugs.
I miss the whole MIUI experience so I gave a try some ported MIUI ICS ROMs for N1 it does need allot of work to work perfectly, but i dont want to go back to GB. The MIUI experience does redefining android - and ICS with MIUI personal I think its the best ROM out there.
May personal opinion I think that google have gave up on N1 to fast. I hope there will be some good ported ROMs, may be MIUI team will official release there ported ROM, but if MarkHUK will give a try porting MIUI ICS to N1 I would love to test it. I know it will be better then other ported ROMs....
P.S. the best MIU ROMs was from miuiandroid.com they all worked like a charm, Thank you to everyone that works on it to release a ROM every Friday.. Big Thanks to Mark