They are making the assumption that they will still be allowed to join Oromia without having direct land attached to it. The referendum from 2004 created enclaves inside DDS. So, already as it is today do Oromos have to cross Somali land to reach their enclaves, the same will happen there.
Who are guilt-tripping Isaaqs? What Somalinimo are you talking about that is used against them? If you're making up, at least be upfront.
Yes, some hawiye land did end up with Oromia. Even though some of the locals voted for Oromia, there were flawed referendums which didn't depict the result according to the wishes of the locals (those who were against). Subsequent procedures lead to their land being handed over to Oromia.
As far as Cisses, besides a small shared land that they live in Mieso and extended areas that went with Oromia, most of their land are either in Sitti and Dire Dawa.
The Geri and Ciise do not share a border. The Ciise do not reach into Fafan and the Geri don't reach Sitti.
The Ciise border the Gadabursi, Gurgura, Gugundhabe and Karanle Hawiye, the Nole Oromo and the Afar. The Ciise do not have a border with any Darood subclan.