"Nigeria Operations Update - Has it changed much in the last few years or not at all in the last 20?!!!!!"
Well I can vouch that it has changed a lot in the last 9 years.
Lagos airport is now absolutely fine; Aircon works, escalators and travalators work, customs are polite and efficient with no hint of bribary, carrousels work and the crowds are kept away from the exit as you walk out.
In country, there is a GSM network and internet, so communications are relatively normal. Transport between bases is by Jet rather than Twin Otter.
Aircraft are mainly modern (EC-155, S-76 C+ and 412s on the way)
Some things never change though.