>>96371067
The obvious counter point is the Lost and the Damned army from the Eye of Terror codex.
It worked fine and was a good mix of Chaos and Guard with a handful of new units added.
I guess >>96362747 doesn't know about Second Edition Genestealer Cult rules, the problem is in the execution of porting that force over not the concept.
Some aspects were already weakened by changes to the core and Tyranid rules. The creator of the Journal list then removed a bunch of stuff from the 2nd edition army list, weakened some units he didn't remove and also made choices while trying to make the army fit the new Force Organisation Chart system that hurt the list further.
-Genestealers in 3rd/4th were nothing compared to their 2nd edition version.
-Psychic Powers in 3rd/4th were nothing compared to their 2nd edition version.
-No Rapier Laser Destroyer, no Tarantula, no Mole Mortar, no Thudd Gun.
-No Land Raider, no Chimera, no Imperial Guard Land Speeder.
-Hybrids reduced from S4 to S3.
-Hybrid Broods in the journal list could have 2 models armed with a heavy or special weapon, in 2nd edition every model in a Hybrid Brood could take wargear from the armour, assault weapon, grenade, basic, heavy or special weapons list.
-Hybrid Broods and Genestealer Broods in the Journal list are Elite choices (max of 3), in 2nd edition they were standard broods 25%+ of your points had to be spent on them and Brood Brothers.
-Brood Brothers max squad size reduced from 20 to 10.
-Chaos Codex Allies could be taken as part of the 25% spent on support.
In return for this he gave them a bike squad, an open topped truck and a 10-50 model WS/BS 2 initiate squad with infiltrate.