Q:

Disadvantages Installing Gnome on Ubuntu unity

I want to install Gnome on Ubuntu unity i want to know is there a risk of getting my Ubuntu not work after boot are there other disadvantages of installing gnome on Ubuntu unity.

A:

It will boot but you will have to change the desktop environment from the log in screen.
The downside is you will have 2 application sets
I recommend this method
1 Download Ubuntu Gnome Remix HERE
2 install to USB/CD
3 Boot USB/CD
4 Choose instll ubuntu
5 IMPORTANT Choose the option Upgrade Ubuntu 14.04 to Gnome remix (or something simmeler, upgrade is the important word) 
6 install 
This will change your Unity version for the Gnome version while saving your home folder
Documentation is HERE

