I really liked Cold Front. When a story is good enough to grab my attention and get my imagination working I can overlook all the "wibbly-wobbly timey-wimey" complaints and cast aside any disparaging thoughts about the writers of prequels needing to go into the future to avoid messing with cannon. I'm just going to go along for the ride. Maybe this explains the "love it or loath it" response to so many time travel episodes.
It helps that Matt Winston as Temporal Agent Daniels and John Fleck as Silik the Suliban are two of the best recurring guest actors we see in Enterprise. It also helps that the introduction of an agent from the future and the concept of a Temporal Cold War is treated with so much genuine scepticism by the crew. It helps that branching time lines and the idea of historians being able to study past events such as the building of the pyramids are so convincingly explained and, of course.....
......it helps that the insertion or removal of body modifications by the Sulibans' mysterious handler is so "gorram" cool.
We also have a secondary plot in which Dr Phlox experiences the Great Plume of Agosoria along with some chanting devotees who were apparently added in to the story as the cover for Silik's infiltration and acts of sabotage. Perhaps the writers were trying to demonstrate a greater interest in seeing religious faith as an aspect of diversity rather than sticking with the "what does God want with a starship?" approach of the original Star Trek writers and cast. We tread on dangerous ground with such subjects but, then, isn't that what SciFi is for?
Please excuse the references in this review to other shows and films: Senior Trekker scores every episode with a 5.