Errrr....Bob, you forgot the rear shock!!
In any case, wrt the rear shock, BMW really stepped up to the plate and issued a stop ride notice to all '14 RT owners and gave the US owners the option of having the shock replaced with new shock, or trade in for different model (with full refund value for the trade in, plus some bonus?), or the option that I took, which was to return the '14 RT to BMW for full refund, including paid sales tax! I then turn around and plunk the money down on my present '15 RT!
To answer the specific question of the OP, there really isn't anything to look out for. Just make sure that the rear shock has been taken care of, which I am very sure must have been done. The other thing that you might object to, or use as a bargaining point, is that if your '14 RT is one of the one that was sold back to BMW (absolutely nothing physically wrong with those), then for some states, the ownership paper might reflect the bike as being "salvaged", which may reflect negaitively when you go to resell the bike! Beside that, you will have a perfectly good RT and the model have virtually perfect track record, as Bob had pointed out.
Edit - just remember.....check with the dealer to make sure that the bike's firmware have been updated to the latest version!