@Sigma
Well first of all thanks for your interest. Concerning your questions, I was trying to keep it simple for an introductory post, yet here I go:


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[b]1) Do they have any other industries than cloning? [/b]

In fact they are a highly industrialized, export-oriented nation (China-like). Ghaasa is mostly depleted of any non-renewable ressources, mostly depending on imported raw materials. However, being a post-ressource peak world, it holds large state-of-the art semiautomated industrial complexes (many of them in orbit, as landing is fuel-ineficient), manufacturing the whole range of products of a Kardashev Type I civilization. 

Their most appreciated, renowned, signature products are neural constructs (for robotics and neuroimplants), biocompatible-AIs, finest-quality replicants and artificial beings and geoingeenering machines for terraformation. Through their collaboration with the ITC, they manage to retain a network of supplier, quasi-colonialized planets, whose economy end up becoming dependent on our evil technology. 


[b]Considering the planet is a ecumenopolis, what else is there? Are all their citizens clones? [/b]

Ghaasa was a vibrant ecumenopolis, but its now mostly inhabitable. After all, Ghaasa was bought at laughable price for a whole planet. Acid rain sweeps the abandoned megalopolis outside the arcologies, and its atmosphere is so thin that it is bombarded by UV radiation.

While clones and other biorobotic serfs amount to roughly 65% of the population, there is a 15 % of neo humans implanted with behaviour chips, a 5% of "sleepers" (neohumans living in "the Matrix"), a 10% of non-implanted neohumans (who continually are the 
target of progroms, and hence often forced to live off-grid), and a 5% of "true" citizens (many of whom are actually encarnated AIs).

As unappealling as Ghassa may look for travellers, it is indeed an important trade node, and below the skyscraper ruins, visitors would be able to enjoy some of the finest, most intrincate and perverted synth-pleasures of the galaxy.

2) How would their clones compete with AI and drones? Who exactly is willing to test and purchase their services?

Robotics, neurotech and bioengineering are the ingreedients of all Ghaasan recipees. Clones are massly produced, cheap bodies for whatever task they are genetically dessigned for. Their more sofisticate -and expensive- "creatures" are designed to excel at the tasks their masters program to.

Their own leaders are autonomous IA, so Ghaasan favour biorobotics hoping for potential rival awaken AIs to perish as the ircarcasses fail. Neo-humans are, well, unreliable and therefore disposable.

Ghaasan's main clients are developing colonies, corporations or other investors in need for synthethic manpower, or planetary-scale environmental and social "adjustements". But a tycoon wanting to buy a new elite cloned neuro-obedient army, or a high rank officer from the core-worlds wanting to transcend mortallity into a decayless computer would readily contact a Ghaasan representative.

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I hope this suits you and gives you a deeper idea of my proposal. May I post my character sheet?