Thank you for your feedback. We have taken your and others' feedback on board in order to improve the trip. We have reduced the maximum group size starting in January and have we shared your feedback with our partners on the ground and discussed these. Amongst others, for instance, whilst the birdwatching in this part of Africa is fantastic we have emphasised the need for the leaders to not focus too much on the birds at the expense of mammals as we realise that many of our clients, whilst they enjoy birds have a wider interest and have often come here more to experience the endemic species such as Geladas, Nyalas and, of course Ethiopian wolves.
The quality of the hotels is a separate issue which is harder to deal with due to the limited amount of accommodation in many of the areas visited on the trip. Whilst we are looking into how these can be improved (either by looking at changes in the alternatives when these exist or by communicating with the current hotels and trying to work with them for them to improve their service) this is not necessarily an easy thing to do in this part of the world.
We have run many tours using the same vehicle which was not a problem but it seems the group size did make things more problematic (which is one of the reasons we have reduced the maximum group size). Our local partners in Ethiopia have looked at specially designed vehicles similar to the ones found in Kenya and Tanzania but these types of vehicles are actually illegal in Ethiopia.
I'm sorry to hear there were some organisational setbacks but am glad to hear that you enjoyed the trip.