Wouldn't mind an A3000 for the styling. Other than that think I am happy with what I have model wise, unless a cheap A2000 1mb chip ram mobo turns up on scumbay.
What I would dearly like is an ICD Ad-IDE internal hard disk adaptor to fit in my A1000 and a nice CSL B5000 030 accelerator with 4mb or 8mb 32bit fast ram module too. OR a 14mhz 68000 accelerator.
There used to be these ATX PC tower/mini tower cases that looked 95% like the OTT sized A4000 case, if I find one of them again I will probably tower up my A1200 and get an adaptor to use a spare A2000 keyboard with it or something.