I totally agree with you for the need of a matte coat (and that the chipping is something off scale...). I did some touch ups, used tamiya weathering pigments for engine exhausts, a drop of clear gloss to the red lights, and added the painted antennas. The last touch is a coat of final acrylic matte varnish.
Thank you for all the comments.
Next kits will be the Regult and the Monster, something larger for better handling.... I think I will reduce the aging process, and I will try to keep them with a "newer" and less weathered look.
Bye!