Tried that out - definitely does not work for me.
The Germany Air Trannies cannot get to Algeria in G1. Which means they cannot get a resource via airborne there for a barrack.
Germany can divert submarines to threaten the British squadron off Gibraltar but that comes with the rather large sacrifice of not attacking other UK forces - which to me means losing G1 advantage of enemy scattered - since in most cases what I saw is that the UK - USA pack up their things in convots and submarines turn quite redundant there (They may go kamikaze to sink 1 or 2 trannies but getting sunk in turn by the combined escorts of USA + UK).
If you don't do that - the UK can simply blockade with their Gibraltar squadron the zone there to prevent Algeria resource to be shipped.
And by turn 3 they have their tank or plane factory done in Belgian Congo.
So as it is now to be it just seems that the Allies are to sink a cheap unescorted transport, and that a resource is being handed to them, pratically stranded in that region (So a bonus to them) or with extreme risks / tradeoffs for the Axis considering the Allies have naval superiority there AND if Germany tries to extract it via air transport, the only airfield that is there is somewhere that the Allies by turn 3 can invade with UK and USA forces as well.
So after this ulterior evaluation I do not think the change is any good. It may delay Allies of 1 turn maybe - but it will net them more PU on the long term, 1 resource probably handed to them, and in general less flexibility for Vichy produced forces due to even less BPs once the West Afrika falls.
The Allies do not even need to strictly direct forces in the turn 1 or 2 there (unless they wish to hasten conquest) since anyhow there will be only the starting 3 troopers and if Germany gets a barracks there it will be in the extreme of West Afrika, with the dedication of shifted submarines that do not attack stuff in G1, and eventually the assistance of the fighter starting in Africa getting parked in Marocco (and thus not offering cover in Libya).
And as Wirkey pointed out in the chat, UK producing in Nigeria is neither good either.
I'd also add 1 INF per side (Germany / UK) to the respective Guyanas.