Awesome Logo, it is not relevant so much that you know what a Sugar Glider is, or what it might be, but more important that the logo is simple and unique enough that once the users are introduced to it, that they will later associate that logo with your brand.
If you can incorporate some relevance between the logo and the brand or can strike up a conversation such that the customer now has a story to buy into, then this will only improve the retention of the brand, but you shouldn't try to put too much weight into the meaning of the logo if you can.
So as a logo on its own, good job. It has meaning, so when asked there is a clear response that all stakeholders can buy into. This is an important part of building brand ambassadors, if the logo has a clear visual meaning, then it is easier for everyone to be on the same page if anyone gets asked about what it means, being on the same marketing message is the key.
- Should I make the sugar glider more detailed?
NO - detail here might even be too much, certainly doesn't need more.
- As in have more colors (Grey, Brown, etc..)
NO - even consider ditching the gradient, 3 colours is plenty. In fact the gradient should probably be relative, notice the graident of the character vs the gradient of the text, that makes it look like it is out of alignment.
- Is the neck too long?
NO - its cute enough, don't make it look like a ferret ;)
- How does the face match up?
Yes? who cares, it looks happy
- Does the logo make sense?
The gimmick of the (insert irrelevant animal here) holding the map pin is great, but if you can draw more focus to that, the map pin, then even better. More of the global community will make the association between the map pin and something to do with maps then they will with the chosen animal.
In Australia there is a great non-sensical marketing device for Compare the Market, they make a play on the name and use a Meercat as their brand ambassador. Does it have anything to do with their product, no, but they used it as a tool to focus many marketing campaigns over the years.
Will your product get to be as big as theirs? Who is to say, but if you didn't have grandiose plans to use your animated sugar glider in marketing campaigns, then you could probably afford to reduce the detail and go more abstract.
If the map association is important to you, then try to make the pin larger and look at inverting the color of the pin or the glider.
Gradient and detail fall into the similar categories. Your logo would presumably need to translate into a number of formats and shapes and sizes. Gradients play havoc when you try to scale the logo down automatically, meaning at some point you need to consider a monochrome and small variant would also drop the gradient for two tones. If you base logo has less detail then less effort needs to go into scaled versions and hopefully the overall shape can still be recognisable.
Recently Discord changed their logo, its interesting to see the response from the community and to read about their thought processes. This article isn't the one I had in mind, but has some good background: https://support.discord.com/hc/en-us/articles/1500009438682-A-Fresh-New-Look-to-Celebrate-Our-6th-Birthday