I agree that SH3 has a lot of life in it yet.
Until SH5 comes out we really don't know if the mystical 'immersion factor' will be as good as the eye candy.
We'll just have to see.
I'm going to have to replace my PC to play SH5 - at the moment that might be a struggle.
But the real killer is that I read somewhere else in the forum that Ubi will cease server support for SH3 sometime this year
i.e. after SH5 comes out -
So SH3 will not be killed but neither will it be encouraged to thrive