PFlow needs an Off in viewport button like it is in the modifier stack for any modifier. So you can set up the particle system, disable it in the viewport, continue working without loss of performance and finally render the scene without turning PFlow on again.

Layers editor should have a purge empty layers option.

Please make soft selection work with the freeform ribbon 'Drag' function.
The way it is now, we can SEE the soft selection, but it has no effect.

Although you can use the Working Pivot to achieve the same result it would be easier and quicker if we could select a hot key during any of the transforms to move the position of the transform origin to a new location.

e.g.: Many Arch&Design properties would be ignored by iray. These properties should be hide or grey-out in material editor if iray is the productive renderer.

3dsmax should ignore distributed bucket satellite host’s faster, if there are not online or IP is wrong.

IMHO the timeout should be variable set by the user in render dialog.

little purpose : Pre-visualization of edge cut (loop mode) like in C4D.

When I open a maxfile, max should ask me if it should automatically point to the project folder from the file I opened

when save rendered image is off then is should be disabled for render elements too.

When I want to open a new file and I set "See all files" I sometimes come across 3ds files. However, I cannot open them while in that "Open file browser" (At least not in 3ds max 2009. I have to close the "Open file browser", click the import function and I can only open 3ds through the import option. Why can't 3ds max automatically recognize a file extention and act accordingly through on "open file browser". Best thing would be to completely eliminate the import option and upgrade the open file option instead.

In the render settings, mental ray displacement uses the term Max. Subdiv.. However, if you use the localized displacement settings (right click on an object and go to the object properties / mental ray / displacement...it's still using the Max. Level terminology from older versions. I have seen this trick users into thinking the settings were different somehow just because the names were different. I would unify the terminology to prevent confusion.

if you draw a line, you get all the measures displayed in the Prompt line, but if you activate snap on grid and draw, the XYZ infos overlays it very fast, anyway, the XYZ infos should be shown after the measures like it was before, this bugs since max 6 or 7.

When you open a scene with a whole lot of maps missing, would Like a option to just REMOVE/DELETE that map from the scene.

or even in the Asset tracking, just a option to delete the map or file from the scene

When creating a new layer it's incredibly annoying that it becomes the default. I'm constantly setting the default layer back after creating new layers.

If you're working in linear color space and using MR as your renderer, Architectural Material transitions in many areas (e.g. a carpet going from well-lit to sparsely-lit) will look choppy. The best way to describe it is the Posterize filter in Photoshop, which reduces the number of colors by grouping similar colors instead of using a dithering effect. This bug makes the panorama export tool useless in such situations.

when I hover over a tool, e.g "Rotate", the tooltip says "Select and Rotate" It would be nice and easy to remember - especially for new users if it displayed the keyboard shortcut associated with that command - for example "Select and Rotate (E)" If the user changes that keyboard combination, the tooltip would update accordingly.

Why, why, whyyyy ? ? ?

Why, why, WHYYYYYYYYYY ? ? ?

The other selection modifiers (Mesh, Poly, etc) have options for Edge Distance and Affect Backfacing. These options are missing from the volume select modifier.