I like the idea of Royal Guards fighting with the Rebels, but wouldn't this bring back up the possibility of(yes I know that some dissaprove of this)jedi? The melee would be similiar to that of Darth Maul (assuming that you used their melee which would be more fun than sniping).

Here are Royal Guard statistics:

 
*Homeworld:
Kamino 

Height:
1.83 meters

Weapon:
Force pike

Affiliation:
Empire
 

Elegance and deadliness --- these are the hallmarks of the crimson-clad Royal Guard that accompanied the galaxy's sovereign at all times. While the guards can trace their origins to the cerulean-clad Senate Guards of the Republic, Palpatine crafted an order of protectors that stood apart from the rest of his forces.
Only the most promising of the Imperial ranks were selected for Royal Guard duty, based on stringent requirements of size, strength, intelligence, and loyalty. A Royal Guard was completely covered in flowing red robes and a sleek, featureless scarlet mask obscures their faces.

*Courtesy of Starwars.com

Alternate stats are:

*Emperor's Royal Guards (also known as Imperial Royal Guard or as Red Guards during the time of the Old Republic as opposed to the Galactic Senate's standard "Blue Guards") are the best and most loyal of the Imperial stormtroopers, solely responsible to Palpatine; their sole task was to protect Palpatine, his residences, and clones. They wear flowing crimson robes (though ceremonial, these uniforms are specifically designed to not hamper movement) and a sleek, featureless red mask; the armor itself bore design influences from the uniforms of the Death Watch of the Mandalore System, the Sun Guards of the Thyrsus system, and the Senate Guards of the Old Republic. Their standard weapon is a force pike which they use to inflict unerringly precise and deadly wounds with great skill. They accompany Palpatine wherever he goes.

Organization and selection
Royal Guardsmen trace their roots to the cerulean-clad Senate Guards of the Old Republic. But in comparison, there is a special elite, within this elite-of-elites, class of Imperial Guards called Sovereign Protectors; they serve as the final pinnacle Royal Guardsmen can hope to ascend to, and this nigh-impossible to reach rank serves to motivate them still further. In addition to the usual duties regular Royal Guards handled, Sovereign Protectors were singled out, as much by their elaborate light-weight ceremonial armor as their charge of policing the ranks of the Royal Guard, by being answerable only to the Emperor himself or Darth Vader. After the Emperor was reborn on Byss, the Sovereign Protectors' paramount duty was to guard the clone vats - a task in which they would fail, due to the treachery of Carnor Jax, the Emperor's physician, and the dark side adepts Nefta and Sa-Di.

The Guardsmen are selected from the elite squads of the Imperial Stormtrooper Corps, and before even beginning the training that would wash out most of its inductees - fatally, one might add - are judged on select size, strength, intelligence and loyalty requirements. Those who successfully match all criteria are allowed to begin training in the Echani arts in the unoffical training compound located on the sterilized planet of Yinchorr. A mere 4% of all trainees would survive the rigours that awaited them to become Royal Guards; during a yearlong training program, recruits sparred against each other continuously perfecting their combat skills. By working both alone and in pairs, recruits learned how to rely on themselves or on a teammate to achieve victory, a step away from the squad-based Stormtrooper training received on Carida. Failure in training often meant death. In their final test, trainees fought each other to the death in an arena called the "Squall" before Palpatine himself. Only a handful would survive this final test and display of their loyalty and skill.

Royal Guardsmen are trained to use any form of weapon known to the Empire, including but not limited to: any blaster weapon, bo staffs, basic swords and lightsabers, as well as a dozen or more martial arts forms.

In order to keep themselves in top form at all times, Royal Guardsmen often dueled, in what is described by a viewer in Palpatine's private court as "a brutal war, consisting of only two men". This practice kept the Guardsmen in shape as well as giving Royal Guard recruits a chance to advance in rank. They were occasionally rotated out in units to Stormtrooper detachments in the Outer Rim or other combat areas to keep them in fighting trim, and spread their legend.

In Star Wars Episode III: Revenge of the Sith, Jedi Master Yoda easily manhandles two Royal Imperial Guards using the Force.

Known members of the Imperial Royal Guard
Sovereign Protectors
Carnor Jax
Royal Guardsmen
Kile Hannad
Kir Kanos
Ved Kennede
Vin Northal
Grodin Tierce
Guardsmen-in-training
Burr Danid
Alum Frost
Lemmet Tauk

*Courtesy of wikipedia.org