Having sold a lot of those mounts, I can say:
Since we are discussing history, I am quite sure that the first LXD-75's shipped with the same extruded aluminum tripod as the LXD-55. When Celestron introduced the CG-5 ASGT and AS mounts, Meade responded by first upgrading the LXD-75 to 1.75 inch tubular legs and then later to 2 inch.
I've never seen an LXD75 head on an extruded aluminum tripod unless someone piecemealed a mount together out of left over parts . Nor can I recall the 1.75" steel legs . Now maybe I've missed something here but I've never seen one . Maybe someone has photos or an old ad that can prove otherwise .
I'll still take my LXD75 over the CG5 all night long . I get dead center go to's from one end of the sky to the other at 120x magnification all night long and tracking that keeps an object centered for literally hours on end at high mag . I could virtually leave the scope , have dinner , watch a movie , go back out and still have the object in the eyepiece . Granted , some nights alignment are better than others but I never saw my observing buddy's CG5 even come close to doing that . I dunno , maybe he's just lousy at set up .
--I didn't know until recently that they had ever made the LXD75 with 2" legs. All the ones I sold had 1.75" legs.
--close to a third of them came with the threaded plate casting (the piece of the mount the long threaded tightening shaft threaded into) stripped out so that tightening the centerbolt was impossible. Meade replaced them all, but still.......
--a number of them came with dead hand controllers
--still others came with one motor not working--usually the RA.
--And the T-handle on the end of the tightening shaft had no jam nut on the upper side so invariably threaded up the shaft during tightening. It required dismantling the shaft and adding a jam nut inside the T-handle so you could actually tighten the center shaft by hand.
--most of them were improperly adjusted at the factory and had gears that engaged too loosely, allowing substantial backlash in the gears.
In comparison, the Celestron CG5 ASGT mount had an issue with the reliability of the on/off switch and a too-loose power jack central pin. The 2nd issue was user-solvable, but the first issue was a problem with about 1 in 20 mounts.
All-in-all, the CG5 was reliable; the LXD75--not so much. And maximum carrying capacity was a little higher on the CG5.
In use, in the field, if they both worked, the pointing accuracy was nearly identical. The Celestron corrected for cone error with the 3rd alignment star, but it didn't seem to add any accuracy over the Meade mount.
My experience was with owning one of each and selling over a hundred of each and dealing with the customers after the sale.
To make this relevant to the issue at hand, if the LXD75 was an example of what Meade brought to the table, at least for this user, sayonara!
OTOH, my LX200 Classic is still working (in its new owner's home) 20 years later. And finding every object dead center each time.