Let's be ruthlessly pragmatic for a moment, and remove any sentiment or imaginary relation you have with these people for a second. Assess them as any other Somali clan, which is akin to another country, if we are being real. Is it in our interest to have a powerful clan next door, that has historically betrayed us multiple times? Nope. It's better for Puntland to have the most powerful clans in Central Somalia, and for them to be at best, vassals of Puntland, throw them the occasional bone, some words of political affirmation, maybe some discreet medical assistance, that's it.
But to build them up and allow them to grow in strength like Khaatumo is a big mistake. First of all, they are not even the majority in Galmudug anyway, so, what is the benefit of this? None whatsoever. They can't stand by Puntland and wouldn't want to anyway. As for clan-wise, you think they wouldn't use the newfound strength to attack MJ nomads in DDSI? For god's sake, even MORGAN, the son in-law of Siad Barre fought them in Kismaayo, if that doesn't say it all, I don't know what does.
Ultimately, every single group that Puntland has nurtured, has only served to backstab Puntland. So, let's not keep making the same mistake walaale.