Making a load of systems/roles that are usually what particular regiments are entirely based around into regimental ranks is a pretty cool idea but I don't think it'll serve to make the server better. Regimental medics makes sense as it allows individual regiments to coordinate better with their own medics and allows people to both use medical and combat equipment as opposed to just sticking in the backlines to just heal every event. Sure, it required the complete dissolution of 74th but it really just streamlined the process of getting healed in events as well as kept the existing research system in the form of a new yet smaller and more exclusive regiment that gives more options for people to aim for, alongside becoming a regimental medic of course. In short, Regimental Medics and RRD adds variety and extra quality of life onto the server which makes up for the loss of the 74th.
Removing other regiments and turning their particular niches into seperate regimental roles is a cool idea if you're not a member of one of them but it wouldn't serve to the betterment of the server in my opinion. Regimental pilots, regimental scouts/snipers, regimental police, regimental engineers, regimental flametroopers or any other regimental roles that existing regiments revolve around wouldn't make the server any easier or fun really and would feel like just a change for the sake of it because it's kinda cool.
It's easier for pilots/scouts/police to coordinate in their own regiments as opposed to medics because their individual jobs wouldn't benefit from having to work with other people within the regiment that don't operate in the same regimental role (For example, why would a dogfighting 21st regimental pilot need to have active communications with the rest of the regiment who's focus is ovbiously not on the enemy ships? It would also be more inefficient to have members of multiple regiments moving around to separate channels to coordinate. And even in the rare case that the rest of the regiment may have an interest in what the pilot is doing such as asking for CAS or to target a particular hostile on the ground or in the air for whatever reason, it's more Battalion's job to coordinate that via comms and not the responsibility of the members of the regiment) whilst medics don't really need to communicate in their own niche regiment as they are supposed to be offering a service to others in the form of healing whilst the other roles aren't, with the exception of transport obviously but this is mainly focused around benefiting all regiments as having 13 transports running around carrying every regiment and Jedi would be taxing on the server and also a waste when you can cram the server limit onto 4-5 LAATs anyway. It would just be harder to coordinate these roles between regiments and would result in the unecessary removal of a regiment.
Plus, CE and all of the other regiments are doing just fine performing their niches. You can argue that 74th was doing alright too but it was always a hassle to spend a load of time combing the backlines for minutes on end trying to find a 74th when you can have a regimental medic fighting nearby you who can sort you out quicker. No more spamming "74th location" in comms.
TLDR: Regimental medics and RRD make the server easier at the cost of 74th whilst making other niches into regimental roles is unecessary and will just serve to upset people.
Denied
DU & CE are given toolgun & physguns on spawn as they need those everytime they die and respawn in events as they are primary building regiments. Other regiments do not need them as frequently which is why you do not spawn with them. If you are doing a training I am more than certain that there will be a staff member online to give you these tools, this also means that staff can check that they are being used for the proper reasons.