@TorbenJA it’s not the most commonly used route being offered here, just a route that got prioritized by the system (probably a while ago) due to being IFPS compliant at some point.
SimBrief stopped offering the latest and/or most commonly used routes a while ago, except in the case of city pairs where no other preferred routing (from either IRL, VATSIM or previously “known-good” routes) exist. In the EKCH EGPH case this actually leads to the suboptimal route taking precedence over the last used route which would eventually end up being via ODN.
Given that Navigraph/SimBrief doesn’t have either the manpower or necessarily the data to manually validate all possible city pairs (even popular ones), combined with the extreme complexity of european airspace, even the most refined automated system is bound to have many cases of suboptimal to incorrect routings proposed on a regular basis.
The fact that significant efforts are going into reducing the number of such issues on simBrief’s side is rather interesting, given how the people familiar with each specific airspaces (i.e. the corresponding virtual area control centers on VATSIM and other networks, and their parent organizations) haven’t come up with a solution other than, sometimes, reporting specific issues to simBrief for manual fixing by the latter.
When, ideally, you’d expect the parent organization (e.g. VATSIM, but not only) would provide people with local knowledge (the numerous virtual area control centers and their respective controllers, who are the ones who end up having to ultimately validate, correct and then clear the flight routes anyway) a way to submit preferred routings, departures and arrivals which could then be queried by both individual pilots and ideally also flight briefing providers (simBrief probably being the most popular, albeit not necessarily the only one) to build good routes that can be cleared with little to no changes.
As opposed to the current situation where the various online networks simply dump the responsibility on what was a single-person part time operation until fairly recently (i.e. simBrief).
The future system being worked on which will let trusted sources submit preferred routings to simBrief is overall a good thing, but to some extent only because simBrief is indeed, currently, a dominant source of flight planning for simulator pilots. If simBrief were to eventually disappear and/or be replaced by another system in the future, online networks would be facing the same problem again…
@SimBrief in the case of EKCH EGPH a previous IFPS compliant route is taking precedence but it’s indeed an uncommon route when compared to e.g. the latest IRL plans on edi-gla and may need manual fixing.