I'll prolly get flamed but I guess we're talking about servers here cause I don't think I would use with Solaris or Linux as a desktop/workstation because Windows and too a less extent Mac's are some much more accessible at the moment - I will say though it's a pain to have to deal with all the problems that come with Windows - but less of a pain than not having all the nice GUI applications that I am used to.
I'm not so fussed Solairs becomes more Linux like - the tools are fine and as mentioned above you can use gnu tools without too much trouble if you prefer. How did you learn them on Linux, man pages - how do you learn the different tools on Solaris - well it's pretty much the same thing.
I guess the biggest similarity is the desktop because both Linux and Solaris do not have desktops built in you can install your favorite one - no problem at all.
There is nothing to much wrong with Solaris as it is - Sun have done a great job with the OS and having it around has benefited everyone. If they want to make it more of the same as Linux then fine but at the end of the day I am quite happy with using either Solaris or Linux - it's not much effort to switch between them.
When is Linux going to become more Solaris like - I know zones are not there yet but I am sure they would be useful in the Linux world. I don't think either OS should really be knocked as they are both available for free and all it takes is a little time and effort to get familiar with them - keeps your mind open. I'm not sure but isn't this a similar situation between Windows and Mac's variety is the spice of life?
Anyways - Solaris is a great free offering - long live Solaris