That was the whole deal with AE elsewhere. The system they had setup allowed you to basically boost your ass off. Everytime lets say, you attacked Mr. Skeleton with a sword, it'd roll for a blade boost. Depending on how long ago your last boost was, and how high your current level is, you might get one. If you do, it also rolls for a melee and armed boost.
Now, problem with -that- is there is no limit. Now, with the UE/AE mix, it could very well work… but lemee propose another run offa that...
Standard motor skills (moving, perception, strenght... basically your stats in general... they go up as you use them using smaller ammounts of UE, but they don't boost very often. Like, say Joe gets the hell kicked outah him by Casey. Then, after the fight, Joe's endurance, PCP, Aglity, and Str may go up just from experience and because his body was plastered. Either that, or have the same system above, but with a different set of points that uses it to boost. Then, UE can be given to your skills as you use them. If Joe used a gun and kept missing, then his pistol would go up a good deal (maybe, depending on rolls and such). But if he used MA and kept hitting, it would go up, but not as much considering he is making his attacks more effecient, but they still hit.
Then things like driving, piloting, and medical. You use em, you boostem. But there can also be classes for -everything-. Especially the techs. Considering, you don't want to use a Combo Breaker in order to boost your lockpicking stats, you may break it. Instead, maybe you can find an udnerground group to 'teach' you to use em over time for cash. (Assigns your UE to that area as it comes to you.)
Theres also the gym idea I had a while back that could go with this... i'll post exactly as it was written to *gen a while ago:
Ok, the AE thing might work, but sparring could make some chars very strong. How about a student/teacher system? Those who are experience could take ONE student at a time. And its a given that a teacher learns from their student. So if they are like in a certain room (IE training rooms on all levels) then you can have like a scanin system to train (max time everyday, or they tire out and are knocked uncouncious) the student learns at one rate, the teacher at another, when they get enough trainig points, the stat they are trainign on boosts, and it gets harder to boost everytime. Eventually the student gets as good as the teacher, and they cannot train anymore. You can even have things
for diff skills for trainign, like a fireing range for guns, or holographic victims for medics. jsut diffrent things for all of them. This can be abused, but I put a few safeguards on, and more can be added, just an idea, don't lose it!!!!!