Do you know what is it that it allows for such a quick warm up? Small boiler? Saturated group? Maybe my comment is more relatable to HX machines then although I don't quite get how is it possible to warm up so quickly - the machine is still a 20kg piece and you can't beat physics with such large thermal mass.

250ml brew boiler with a small saturated group, and a separate 1.6L steam boiler. It's definitely aimed at a home environment but will easily keep up with making several drinks in a row. Compared to previous HX machines I've owned, it heats up much quicker and is more stable. I think not having a massive lump of brass like an E61 style machine helps a lot.

They have separate tanks for keeping water heated up to temperature wit a much smaller volume and don’t use saturated groups so the total hot mass is much smaller.