no, I haven't built the WnW Gotha G.1 ....but I do know someone who has. Mr Rod Janes of the Medway and East Kent Scale modellers clubs. His build of this kit was on show at our first club meet of 2023 held at the RAF Manston History Museum. The Gotha G.1 (G= Grossflugzeug, or 'large aeroplane') was a large (natch!) and somewhat unconventional twin engine bomber type built in small numbers and may even have participated in a raid on Dover during 1916. It was one of the first Gothaer Waggonfabrik bombers and forerunner of the even larger Kampfflugzeug types the company became known for. The 1914 German Army Type III spec for a Kampfflugzeug ('battle plane') called for a 200hp three-seater able to maintain 120 km/h for six hours carrying 450 kg of bombs. The kit from the now defunct WnW has well over 300 parts and there's one currently on offer on ebay via 'Mainly Military' at only £199...
Here's Rod at our club meet showing off his large model. At some stage in the future all of Rod's one hundred plus WNW builds will be on display in the museum at Manston. Note the 'neat' transportation aid in the lower photo - the model is placed on household scouring sponges....