Well, for the purposes of either fan fiction, television, or future motion pictures, in the post-Nem (DS9 & TNG) era, I'd be okay with seeing inorganic, energy-based, and / or miniscule-sized beings (that may or may not be able to properly function under Terran gravity or atmospheric conditions, or may pose some kind of risk to others in their natural form) such as the Medusans from TOS using Soong-type interactive non-A.I.-capable "body suits" for diplomatic interaction. The kind of body suits seen in "Men In Black".
Plus, with the mixed feelings fans have expressed about the addition of B4, the loss of Data in "S.T.: Nemesis", the Borg, the Praylor, etc. having already been introduced, I feel its inappropriate at this time to bring in self-determined, sentient humanoid-fashion "robotic" life-forms above the development level of "Roombas", as they'd be perceived as a threat/liability to the integrity of the Alpha & Beta Quadrants.
They might be welcome in an alternate universe story or perhaps in a Temporal Cold War cameo appearance in the ENT-era of the 2250's.
We're already trying to digest the idea of the holographic doctor & the Voyager novels covering the brief photonic revolution upon the holo-doc's novel going mainstream back on Earth.
Plus, I'd be antsy as hell about any micro-bots attached to a warp core during an ejection, as all you'd need to do is order Ensign Ricky into an E.V.A. suit & shove their butt up the ejection shaft, get him/her to bear-hug the core, hit their manuevering jets to get the core clear of the mothership. Or slap some tricorder-controlled thruster packs on a core while Ensign Ricky's using a crowbar to pry open a partially-melted external hatch, & away you go. One big quantum torpedo with a redshirt flailing through space behind it for good measure.
M.A.L.P. drones? Umm. No. Long-range & short range starship & shuttle/runabout sensors, ship/shuttle-launched probes, EVA suit sensors, transporter guidance systems, etc. virtually eliminate any need for such devices.
Just my $0.02
Thank You For Your Time, Ladies & Gentlemen.