Well I do think a renumbering is appropriate in this instance though. The fallout from an event plus an entirely new creative team makes it not very likely they could just continue flawless from where the current ends.
That being said I can understand and agree with not being happy with this relaunch. I honestly think that Captain Marvel is a problematic character for Marvel themselves and it kinda shows in their actions.
1) Marvel has signaled that they want her as their flagship female hero and promotes her everywhere and includes her in tons of stuff. The problem is that the readership isn't actually rewarding that effort. These are the average amount of issues sold for each female solo book as of May 2016.
1. Spider-Gwen 70,407 (8 issues)
2. The Mighty Thor 64,833 (7 issues)
3. All-New Wolverine 55,077 (8 issues)
4. Black Widow 42,599 (3 issues)
5. Ms. Marvel 40,098 (7 issues)
6. Mockingbird 32,404 (3 issues)
7. Captain Marvel 31,874 (5 issues)
8. Silk 31,766 (8 issues)
9. Spider-Woman 30,499 (7 issues)
10. Scarlet Witch 27,210 (6 issues)
11. The Unbeatable Squirrel Girl 22,872 (8 issues)
12. Angela: Queen of Hel 21,059 (7 issues)
13. Patsy Walker AKA Hellcat 20,686 (6 issues)
As we can see here the Captain doesn't fares to well here. Certainly not flagship hero level by any means. A damning and funny thing here is that Kamala is towering above her "idol" by quite an amount. Another damning thing is that she is surround by heroes who are not even getting close the same amount of promotion and prominence as she does. This leads out to the second point...
2) Marvel of course sees that too and their solution is to relaunch and have an high rotation of creative teams on the book even within a run. With different status quos on top of that. Marvel obviously does this because they hope to finally find something that catches on with readers. The problem is that this also does damage at the same time. The issue is this stuff makes Carol also into an unstable character. You can never be sure what exactly your are getting because the character doesn't seem to have something established and if you have liked something in a run there is a good chance that exactly that thing is discarded soon after just to try something new. This can make current readers fed up and also may deter non-readers from actually trying out the book. A relaunch in itself is not a problem. Just look at Thor or Spider-Gwen which simply continued their story with the same creative team. No biggie. Carol isn't getting those kind of relaunches though.
I don't know if there is actually a solution to this particular problem.
I personally see another problem with the current Carol and this totally subjective so Im not listing with the above points which I think are pretty objective.
Marvel on their quest to make her their flagship female is making the mistake of portraying her too much as the best and perfect. I personally call that the Superman syndrome who also has to fight that problem.
If you look at most popular heroes you will notice one thing. They are all flawed in their own ways. They have traits and flaws that hook you, make them relatable and not perfect. Be it ego, arrogance, rage issues, insecurities, trust issues, a certain darkness in them, craziness, unpredictability, low or no morals, an unhealthy need for something, etc.
I find current Carol really lacking in that regard. While I have honestly never followed Carol too closely I know she used to had flaws like a drinking problem but all seems to have been swept away and it was replaced with nothing.