progress to lower reqiurments

[MyDreamName]

The EE is being improved upon all the time... I think what you're really asking is whether or not there will be further optimizations to the recompiler (or additional speed hacks)... It's not outside the realm of possibility, but as emulation gets more accurate it's just as likely that the emulator will lose some speed as well. That's sadly the nature of the beast. Compare bsnes for example to zsnes. bsnes has much much higher requirements, but is also much much more accurate in emulation (and better compatibility). Many will argue that there is little need for bsnes' level of compatibility when zsnes plays nearly all games anyone would want (the difference is something like 1% difference in that department) but the goal of emulation should always be to strive for compatibility first...

Programs naturally run faster over time with faster hardware, and faster hardware will always be coming... but incompatible code will always be incompatible no matter how fast computers get.

[pseudonym]

There's not really any accuracy/speed tradeoff. Some optimisations are hacks which will lower compatibility but we always make those options in the GUI. The PS2 does not benefit from cycle accurate interpretation, unlike the SNES.