The juggling act is always keeping your fan base and growing it. Take them for granted and it can end badly, cater too much, and it won't grow. If your product is good enough to have a decent sized fan base in the first place, then you shouldn't need radical changes to start with....you need to bring your fan base along, and show new viewers why people become fans. It's a thing you see with NuWho slowly pulling itself back to the classic series over its first few years, and it's what you don't see with the Kelvin Universe in some respects...there's no fan groups that I have seen that just like the KT. (She caught the KT, left me a mule to ride.....) Instead you get the KT highlighting the original more and more, trying to capture those from the existing fan base who didn't go along when it first happened. It makes money, but it's creating its not own fan base, not creating an enduring longevity beyond the next movie (almost no merchandise or tie in presence. Even Elementary and Doc Martin managed a novel or two.) This is probably one of the reasons why we are back to Prime....it's just to big to consign to history, ignore, or attempt to replace. You have to work with that, or sink. Look at Ghostbusters...that wasn't taken into account there either.
Now...having your cake and eating it is hard, but that's the game you play with franchises and fan bases. You want to supplant a well-loved original in any way, you better be white hot with talent and some genuinely good ideas. Which is how TNG eventually eclipsed TOS in its time.