I'll be surprised if they satisify me. It will need to have a DVI input (for legacy use) and minimal processing (for less added input lag with legacy hardware and no scaler) and then a DP 1.2 input that turned off all processing for DP connections. 1920x1200 would be a high enough res at 24 in or less but 2560x1440 is fine.
The A+ IPS panel I need would have to be designed with an RGBLED that is spec'd to last at continuous 325cd/m^2 brightness for >=125k hrs and non-PWM control would be necessary also. I'd want it to be an A+ IPS panel (full RGB8 bit native no dithering, but native RGB10 bit would be an added bonus) with near AMVA contrast levels (800:1 minimum at 275 cd/m^2 brightness) and to fully support 120 Hz input (greater than 120 Hz without any panel processing on would be an added bonus). Also, I'd like the viewing angle to be better than that of my Apple LED 24 in Cinema display. Build quality needs to be high as would panel uniformity (99% uniformity). It would need to have a maximum pixel response of 13ms, and a typical average response time of less than 7 ms.
I'd need extra long lasting power circuitry that results in <=.1% VDC output ripple and rail regulation of -[.025, -.025] plus good ESR levels at nominal input voltage (100-264 VAC) and at >=1/3 load. I'd love for them to use a 14 gauge 4 nines oxygen free copper AC power cord (6-7 ft) and if they can't, then a standard IEC input would be good so I could use my own power cord.
I'd also need it to be glossy (zero haze factor), but not with glass.