Even though I could not care less what others buy, I disagree that it is a very small group.  People with lots of money and buying more expensive cars likely don’t worry or fear repair costs once warranty expires as those on tight budgets purchasing more affordable vehicles.  Honda is a good example where they offered 1.5L turbo or 2.0L NA on entry level cars and buyer choice was clear.  Difference in gas savings isn’t much, and won’t pay for additional repairs if that day comes.  Now with electrified hybrids, why even bother.  Newest NA Civic is both faster and more economical.  So yeah, I think cost-conscious informed people do care sometimes.  Question is whether to ignore that group of buyers.  Also see what happened to RAM pickup sales.  Twin turbo 3.0L hasn’t gone over well as replacement for Hemi.  Granted, both have issues.

Preferences can also be based on knowledge.  Bias is defined as unfair prejudice.  Some preferences as is the case with liking red over blue are a different matter altogether.  That’s why I avoid subjective arguments.   I don’t claim to be an engine expert, though I know far more than most people after studying them in college, and certainly not telling anyone what to buy.  It is obvious Ford was working on an I-6 a few years back, probably to reduce costs compared to a similar V6; so at least the perceived need was also seen by Ford.   Had Ford proceeded with I-6 project, I would have hoped they offered it in both EB and NA variants like they do present 3.5L V6.  Not holding my breath for either though since every manufacturer that has introduced a new straight six in last few years has made them turbo AFAIK.  Some are good, others having their share of issues.

I'm also guessing it made no sense to keep the Camaro either because the new Vette had similar sales numbers to the Mustang this past year.    Plus isn't the Mustang the Worlds best selling performance coupe anyways?

I think it might be a better fit if they ever came out with a Mustang Sedan-hopefully it would make having AWD easier, since the motors would be in the front wheels.    I don't think a hybrid Mustang would appeal to people who are looking as it as a performance option-Ford will add it when they are forced to. 

As a poster much smarter than I am said on another thread, Ford is probably content with the number of Mustangs it is now selling because of CAFE. Mustang is probably still only in production because it is such an iconic car for Ford, much more than the recently discontinued Camaro was for GM. 

The 2.3 PHEV was supposed to debut in the S650 Mustang but then was delayed/cancelled. I get the feeling that it didn’t clinic strongly but could have been something potential buyers either didn’t want or didn’t feel strongly about.   In the PHEV Ranger, the battery is located under the rear tray between the chassis rails. S650 was supposed to have some CD6 components and floor pan changes to allow  fitting PHEV battery, it is an option there but feels like Ford has gone cold on it.

I understand your position on turbos.  However, I believe you are part of a very small group that feels that way.  I doubt it constitutes a large enough market to justify the development of an NA inline six. 

I would love to see the hybrid from the ROW Ranger in the Mustang! I would love to see the Fusion come back to Flatrock. I had a 13 titianum with the 2.0 ecoboost and I loved it!

That’s hilarious.  Your personal preferences determine what you like or don’t like.  When you project those preferences to what mfrs should build and what others should buy then that’s bias.

They test a lot of vehicles here that aren’t sold here, so it’s not a guarantee.