The problem is that SE has a lot of trouble balancing around crowd control utility, which is king and has always been in the mode. If a job is chokeful of CC abilities like RDM, WAR, BRD are, especially if they are AoE or on demand, this gives them a seriously oppressive presence on the field already. With that in mind, and baring potential issues of job design that introduces the conflicts you mentioned, RDM functions relatively fine in my opinion in terms of balance there, and the problem is that it competes with jobs that are absolutely busted like PCT, sharing a similar niche. On top of it, RDM is also more weighted toward melee in the matchmaking algorithm and this makes you like for DNC fill for melees a lot more, which can frankly feel like crap at times.