Shevarnadze in my opinion did nothing much worse than other leaders of most of former Soviet states. Look to Turkmenistan and what is going there in particular, but also other countries. No former Soviet state built a true western democracy, except probably Baltic States (Lithuania, Latvia, Estonia), but with the current happenings here (opposition tries to get rid of President by throwing compromat (in most cases having nothing to do with President) and other kinds of meaningless propaganda) I already start to doubt this.
It is interesting how situation in Abkhasia, Ajaria and South Osettia will end. Russia was succesfully colonised South Ossetia and to a lesser extent Abkhasia (Roubles as currency, etc.), while Ajaria was de facto independent. What will new government do about these issues? Somehow I feel that Russia played a part in influencing this 'revolution' - they had certain issues with Georgia (Pankis hills apart from already mentioned) and Georgia wanted to join NATO, this way changing the geopolitical situation of the region. We will see if the new government (one which will come after next elections to be held after 1,5 month) will continue this integration or turn back to Russia. If the latter will happen, it will be quite guranted that Russia influenced (not saying that fully organised) this.
Shevarnadze by the way decided to remain in Georgia, although Germany offered assylum.