The problem lies in the reality that the logo is indeed to nice. It looks like a jpeg file of a mineral from a computer game and was edited to create a logo. Seeing the people making their own logos means that Lisk should allow the community be involved in creating a new logo if they do decide to replace it. If you're worried about professionalism then that logo is the very first problem. Get rid of the guy that created it and hire a better man for the job.
Absolutely not!
In my opinion, other things are more important. The new office in Berlin, the company creation, the stability and security of the network, the further development - v0.4.0 currently and so on.
Max wrote several times that a new design, a new logo (a new corporate identity) is planned - but not now.