To which I said, why bother doing it at all? Given that OT releases have slowed over the last year, you wonder if it is good business practice to take up a release slot for a figure that will not be a huge seller. It's just lazy, and to me there's no excitement there. Years ago I think Hasbro did a similar repaint. If they're going to reuse the moulds then at least use them in a way that's genuinely surprising like porcelain stormtrooper was. Union Jack Fett, or Buzz Lightyear deco Fett or Marvel Art Fett - at least those would make you sit up. This is boring and predictable IMHO - but please don't be offended by me if you love the idea of this, it's just my twopennysworth.
Well, here's the thing. "OT releases have slowed over the last year." Ok, that's true... there could be some licensing holdups behind specific characters that LF/Disney doesn't have cart blanche to do with as they please (Tarkin and Leia spring to mind: they had to seek permission from families to CG the characters in the new films). Or, perhaps HT just figures there's no real rush, given that the films have been out for
forty years already. They don't exactly need to move to capitalize on release hype. Star Wars OT figure hype is eternal. They know they have the license and they know you're going to be here whenever they get around to putting out a figure.
But to answer your question ("Why bother doing it at all?"), here's my hypothesis: Because new figures from scratch take lots of time. Sculpting, prototyping, resculpting, figuring out paint colors and paint application, designing packaging, ordering materials, instructing staff to paint and assemble everything. SO... chances are, HT hits lulls in their schedule while they're prepping new figures, that they wouldn't have anything to send to the factories/painters. And rather than tell all of their employees "Hey, go home for a week, we don't have anything for you to do at the moment," they work in repaints of existing figures.
They already have all of the molds, they already have the packaging (albeit they make new art). They just come up with the new paint scheme, and *boom* the factory can be churning out product with a shorter turnaround time, bringing in some profit while higher up the food chain they continue to work on bringing new figures to production.
So in that regard, HS Fett may not be "stealing a release slot" so much as "filling in some space where there might otherwise BE no release."
As for why they would do this repaint instead of something like another porcelain china pattern... I'd like to think there is even LESS of a market for that eyesore than there would be for this figure XD But who knows, maybe it was a big hit.