I was in the exact same position(Same rifle, Same calibre) three years ago, I ended up giving the Tikka to a friend who really needed it(coincidentally I still get to shoot it) and went R8 for multiple calibres.
Why? well the weight of the super varmint was my main reason but the reality was because I could.
You pay your money and you make your choice, I suspect you have a "new toy" itch for which I have been there done that, at the end of the day theirs a lot of kit out there now and most of it is adequately capable.
Over the last few years I must admit, I spent money on fad's & fashions within this industry, the reality is I learnt that at the end of the day when you find something your comfortable with its best just to stick to it, learn how to use it and enjoy it.