We can update all these minor things in 1 day. As I see it by now, there has never been a Mac wallet, nor a linux wallet from the SuperDev.... But we have it ready ( I am using the mac wallet ).
For updating the logo...where is the Logo, who has the original files?...All the changes you propose and the steps to go can be done in 1 day.
Brookfinancial is the person who made the logo for Supercoin. It's public domain I believe.
Now...we will keep the source from Supercoin open source, however if we are going to add in wallet trading, multiple coin support and other exclusive developments to Supercoin, then those developments WILL stay closed source.
No coin has benefits if ALL the source code is open source. Closed source will give value to a coin as it will be unique. So I think we will do the following, we will make 2 wallets for every operating system. 1 with special futures and 1 without them.