- The declared overcoming of 2 cm obstacles - well, that's it . I climbed on the threshold (18 mm, with a chamfer) with great difficulty and roar. But he moved funny - like Grog, waddling. I had to fork out, cut off the old threshold and apply a new aluminum wide. - Side brush of dubious effectiveness. It throws debris away from itself more than it pulls it under the belly into the main brush. To avoid this - it must be placed in an inclined plane. The Roborock app is, frankly, a C grade. - There is not enough double tap to enlarge the map - A long tap is also not implemented - but it would be convenient, for example, to select single rooms before cleaning. - I would add a summary in the form of an interactive table, before starting the cleaning. Each row of the table is a room. In each line, the cleaning mode is configured (default values for this room are pulled up or edited manually) and the number of passes. Lines can be dragged manually to set the cleaning sequence. Plus, in the same place in the form of service lines, you can add a return to the base to replace the rag or a pre-launch pause to get the rag wet. Such tables can be saved as ready-made scripts for manual/scheduled cleaning. - Icons are disgusting. Different stages of "droplet" and "fan" are almost indistinguishable from each other. - By the way, what influences the intensity of wet cleaning? On the water supply, or the vibration frequency of the rag? It is necessary to better think over / redo the procedure of the vacuum cleaner, for example: - Turn on the turbine at the specified / full power only when the dust reaches the point where the cleaning starts. Why do I need this roaring tornado that rides through the whole house to clean the back room? - Make voice announcements before turning on the turbine or with a delay after turning it off. Now it turns out porridge - nothing is heard because of the roar. - Make delays for lowering the rag, it does not fall instantly. Pylik arrives in a new room, revs, and a trace of a rag appears after half a meter.