Reluctantly let my lease TCR go at 3 yrs and 27000 miles, and replace with 128Ti lease, the TCR was just too deep in pockets for what would be a second car but in your scenario, with the TCR being a weekend car, with work car doing all the grunt miles, its a no brainer, the lift in experience, if any from the CS over the TCR will be marginal, the lift in money by flipping the CS would be substantial by not exchanging (how much you think you save)
The TCR was not exclusive, but it may as well have been as it was limited end of MK 7.5 run, had the full evolution of the MK 7 incorporated and at 295 BHP is as lively as anything, it was the standout send off for the MK 7x series and will say, with a stable and proven O/S with nice balance of touch/switch interaction.
Is the TCR Akrapovic? as that will add to down the road desirability, as much like the ED 35 they will command that little bit more than standard GTI and even R.
Was huge fan of my TCR and it was only sensible head that stopped me keeping it, as money in bank these days is a comfort blanket more have needed than ever to ride out these testing times,