Originally Posted by
shgs
I don't think merchandising is as much a problem as you (and admittedly probably Marvel) think.
First of all, you have to think about towards whom merchandising is marketed. Essentially, you have two consumer bases for merchandise: kids buying toys and older enthusiasts buying collectors items. For kids, brand loyalty doesn't really extend beyond what they think is cool at any given moment. Currently the classic Avengers are cool, not because the kids recognise them as a 50 year old brand, but because they have collectively starred in a bunch of blockbuster movies recently. However, you could ask for no greater proof that kids couldn't give a shit about name recognition that the phenomenal success of Guardians of the Galaxy and all related merchandise. As long as your characters feature in a popular cartoon or film, kids will lap up the merchandise too. It doesn't matter if they're established or not.
For the older enthusiasts, nostalgia and established characters will have a greater draw, but that's fine - just because the comics have moved on doesn't mean the merchandising has to! Case in point, there was a classic Phoenix statue released within the last year despite the fact Jean has been dead for years and hasn't warn that costume (I think?) for decades. You regularly see statues and other collectors items based on classic, defunct versions of characters and there's no reason to stop making them simply because they don't appear in the contemporary comics.
As for the difficulties with introducing new characters in the comics: yes it is hard, but the difficulty stems from the very fact that established characters never change or go away. How do you introduce new characters when the playing field is already flooded with characters who are never removed permanently? If you love Hero X, why invest in his replacement, emotionally or financially, when you know X will be back in a few years - sooner if you don't buy the series featuring his replacement? It is only because the classic characters have never gone away and barely changed over the years that their continued, unchanging existence has become an expectation, and in many cases a perceived entitlement. People don't expect characters in other forms of fiction to last forever because they never have, and they exist in fictional worlds where time actually passes so it would be impossible for the characters to last forever. If the sliding timescale didn't exist it would be much easier to introduce new characters because they would be not only expected but necessary for the story to continue - I've never heard of anyone complaining that a new soap character was replacing their favourite, or stopping reading the Lord of the Rings because Gandalf and Boromir died. If you need conclusive proof that is not in any way normal to place the continuing existence of a specific character over the actual story being told, consider the fact that Game of Thrones is one of the most popular TV shows right now and it trades on the very fact your favourite characters will probably meet a horrible end.
Finally, I think that the MCU, if anything, would be a reason to abolish the sliding timescale. You simply can't have a sliding time scale in the MCU, because you can't stop the actors aging. Inevitably, whether through contracts ending or the actors simply getting too old, the current lot of Marvel talent are no longer going to be suitable for the roles they are playing. At that point there are three options for Marvel: they can do a Bond and replace the actors but keep the characters, they can do a hard reboot, or they can introduce a new generation of heroes as the older ones retire, are killed or take on supporting roles as mentors and so on. Of the three options the latter seems like by far the most sensible, and the most likely to go down well with cinema audiences. This will mean the MCU is always pushed forwards, with no way - other than a hard reboot - to return to the status quo like the comics do. As you noted yourself, the comics tend to take a lot of cues from the MCU (since the MCU has a wider reach and is therefore the more recognizable). I think, and hope, that that might encourage the publishing side to abolish the hegemony of the older characters.