My issue is simply with the overall "over the counter" price. Yes, it's nice to have super detail, and lots of different liveries and numbers, and opening doors or multiple working lights, but I think we'd be better served by having a basic model "shell" , with correct proportions/measurements and a simple/consistent livery & number (or unnumbered/unpainted - I have 2 Austrains 80 class now numbered 80s2 and 8013) and the basic detail (handrails...hmmm, not sure if moulded is better than none). Note by "shell" i don't mean literally a body-only kit, but rather somehing that can be put straight on the track as a "model" - in the style of the Austrains Basics - or even a "kit" like an Athearn Blue Box. This way the modeller has the ability to ADD whatever they wants to make it better - handrails, different body parts, new paint scheme, etc etc. The same applies to rolling stock.
Personally although it would be nice to have lots of $s, I find it difficult to afford (justify to higher authority) $300+ on a loco (especially if you want more than one!), and the $'s can be better spent on other/smaller things.
However my one provisio is that a good mechanism is an absolute must (No more pancake motors please!). The principle of solid metal chassis, flywheel(s) and multi-wheel pickups is an absolute necessity, and I don't think it has to be a totally all singing, all dancing mech - the old Athearn blue box system may not have been the best in the world, but it worked and was far better than many of it's contemporaries (especially if the direct contact "wiring" had been fixed), and it gave the basis for anyone who really wanted to upgrade/refine a good starting point. DCC compatible? Yes probably, but not critical - as long as the wires are accessible! And REAL Kadee's a must.