pakled/D@M, I have used it since version 3. I am currently exploring v12. if I can answer, I will.

• HDRI support (incl. filters). - not sure, does 48 bit RGB, doesn't seem to do actual .hdr file types, but HDRshop is free.
• 3D model import ánd basic rendering. - not sure, haven't tried.
• Smart objects. - what are these?
• Smart filters (non-destructive adjustable filters) - not sure, would this be like adjustment layers/lenses?
• Non-destructive adjustable effects such as bevels, glows, shadows, gradients, strokes, etc. -Yes, these are applied in the object manager and can be individually adjusted/removed.
• Grouped layers. -Yes
• Raw photo editor. - Not sure.  I work most of the time in .tiff. If i have to work with proprietary raw's I usually use my Thumbs plus professional.
• Extensive texturable brushes incl pressure-sensetivity for wacoms. - Gods, yes!
• Every single layer blending mode photoshop has. - most of them.
• Video-import. - Yes
• Clonebrushing over multiple video-frames. - don't know, it's not something I use.
• Associating files with psd's, updating when associated files change yet leaving the associated files unharmed by changes applied in the PSD file itself. - nope (grin)

I also make huge use of the object distortion tools.

Don't get me wrong, PhotoShop is a very powerfull tool but it just doesn't work for me. I also really like the integration with CorelDraw and it's DTP capabilites.

Pass no temptation lightly by, for one never knows when it may pass again!