That's kind of creepy because a few days ago i was testing the delay loop back FX chain and thought it would be a great achievement if Reaper would let me drop FX at any place in the list instead always at the end. It was not intuitive to select the first FX, choosing "add" and find the added FX not as second but as the last FX in the chain.
But i have to say i was to lazy to make a feature request. (And i also had no hopes for that.
)
So that is a pretty nice feature in my opinion.
Many thanks