To my surprise (and relief)! I find that the Nilathak's Temple red portal is still active, even though I activated the Halls of Pain WP. Was still able to farm Pindle after touching that WP that was not to be touched in the original D2LOD.
Is this feature something that was improved in D2R as part of 'quality of life' changes? I suppose I'll be safe to activate the WPs in Hell too so I can keep the easy Pindleskin access? Pardon my ignorance, lol.