The idea of MG as an upmarket brand is a fascinating one. Palmer's background is very interesting - I didn't realise there was a later link with Vauxhall. As I understand it, there was some talk of BMC differentiating between Austin and Morris a little more - with Austin being the technology led Citroen analogue, if you like, and Morris being a more conventional Peugeot type maker. Could Palmer have taken responsibilities for Morris while Issigonis took on the more cutting edge Austin?
It also makes sense to push MG upmarket given the brand recognition it already had in export markets, instead Morris later BMC were content to neglect it in OTL apart from rebadged Morris/Austins and sportscars in place of Wolseley, Riley and brief involvement with Rolls-Royce without success before acquiring Jaguar.
Gerald Palmer at Vauxhall was involved with the Viva HA (
part 1 /
part 2 - that was largely commonized with the Kadett A),
Viva HB and
Victor FB before (possibly even other projects before retiring).
Ideally BMC should have rationalised its marques down to about 4 from the late-1950s with Austin, Morris, MG and Vanden Plas. With Austin and Morris being differentiated earlier on, MG being pushed upmarket and Vanden Plas spawning luxury bespoke versions of BMC models.
Austin would embrace FWD like in OTL yet capitalize on the FWD layout by featuring hatchbacks as previewed in 1960 by the RWD Innocenti A40 Combinata. Unlike the smaller Mini the 1100/1300 and 1800/2200 were easily capable of featuring end-on gearboxes, with BMC's misused Research Department being given permission to reduce the costs of the FWD cars and make them profitable as well as increasing component sharing between the Mini and 1100/1300 beyond 30% (compared to OTL). Hydrolastic / Hydragas suspension and Peugeot-like Pininfarina styling would become a few of ATL Austin's USPs.
Morris would embrace conventional RWD cars, essentially early-1960s version of the Marina in Viva HA and mk1/mk2 Cortina sizes. However from the 1970s onwards it would gradually shift to more conventional FWD cars (likely related to Austin) as the FWD layout becomes more accepted though unlike Austin with more conventional suspension and conservative in-house styling.
MG would feature independent rear suspension on its RWD cars as well as 4/6-cylinder Twin-Cam and Rover V8 engines possibly without any FWD models apart from possibly the MG ADO34 (though have other ideas). In terms of styling envision the ATL MGs embracing the Ferrari Daytona-like looks of the Rover SD1 as well as the MG ADO21 prototype (that formed the basis of the Triumph TR7/TR8/Lynx).
Another idea that depends on BMC developing a slightly enlarged 750-1600cc engine (based on A-Series principles) with Twin-Cam variant, would be best described as an early-1960s LWB Pininfarina-styled version of the ADO16 Austin Apache/Victoria with end-on gearbox. Basically imagine the composite of a FWD Lancia Fulvia with Alfa Romeo Giulia (Type 105) Twin-Cam engines up to 1600ccs and possible Citroen-like Hydrolastic suspension.
Or an early-1960s Cortina-sized Marina-derived RWD variation with all-independent suspension and 1600-2000cc Twin-Cam engines, depending on the approach ATL BMC take for MG.
Vanden Plas would absorb Wolseley (and Riley if still part of BMC) to become BMC's experimental in-house version of Radford and Wood & Pickett, being distinct partly by producing luxury three-box versions of its FWD cars (thereby avoiding overlap with Morris's conventional RWD cars) as well as other bespoke Austin/Morris/MG models.
Rover (in the event it joins BMC) would be pushed further upmarket and twinned to some extent with an ATL MG (the latter playing a junior role), the unbuilt Rover P8 prototype's sophisticated suspension bares some vague similarities with Alex Moulton's Hydrolastic / Hydragas suspension systems. The Rover V8* would be pensioned off to MG with Rover developing its own common family of 4/5/6-cylinder and V8 engines. Its styling would be a developed and tidier version of the traditional-leaning P8 with elements of the original Range Rover, which given the success of the Range Rover would have been a correct approach instead of the
Pininfarina Aerodynamica and Ferrari Daytona-like looks of the Rover SD1. -
https://www.aronline.co.uk/opinion/rover-return/
-* An interesting POD would be Rover not only gaining the rights to the all-alloy 215 Buick V8, but also sharing the rights with AMC to produce the related Buick V6. In OTL GM offered Rover both engines though for whatever reason were only able to acquire the V8.
I wonder what the butterflies would have been for the rest of the world's car industry if the UK/Commonwealth car industry had been far more successful (or at least fulfilled its potential). I am fond of Innocenti as a brand and I'd love to think that BMC could have used them to inject some Italianate style into their range.
Innocenti in ATL could have absorbed Authi as well as Cottin & Desgouttes on the Continent (along with Siam De Tella and any ATL Brazilian / Mexican equivalents in Latin America) before eventually being integrated into ATL Citroen-esque Austin by the 1980s-1990s.