A few notes... I recall the sourcebooks saying that an Ewok could actually learn to speak Basic, but most do not. Also, the primitive penalties are removable, so maybe once an Ewok (or another primitive race for that matter) uses a technological weapon enough times to gain an AN through lines, the penalty is waived for that technological device?
On the note of primitive races... would the primitive penalties be completed null if one were to create a Jedi of that species? The way I see it, the primitive nature has more to do with the upbringing of the character as opposed to the species in general. If an Ewok were raised and trained in a Jedi Temple on Coruscant along with all other types of species, he would logically not suffer the primitive penalties that an Ewok growing up on Endor would.
I will have to look up the source book on Ewoks again about the language. I don't recall.
My house rule for challenges are that they can be bought off through lines. So, the primitive challenge is 2 white stones. So, 20 lines could be spent to remove that challenge. So, yes, it can go away.
I am not opposed to alternate stories allowing things like the primitive challenge to not be taken. If an Ewok was found as a child and raised as a jedi, it would be possible to not have to take that as a challenge, but that would need to be worked out on a case by case basis. The spreadsheet that I made was going off of the typical member of that species. Same with the stat limits. It is possible, through technology, to make someone strong (ie robotic limbs) that would allow them to go past those limits, but that would also need to be worked out at time of character creation.
I'm working on my own set of houserules for incorperating marvelrules in the starwars universe. I have come about halfways so far. I have some questions as I noticed you have begun to play a campaign using your rules.
1: Is it balanced and workable to have the blasterweaponmodifiers so insanely high? I was thinking to restrict a blaster rifle to 4 or maybe even 3.
2: When you use your special lightsabercombatsystem how does it actually work? If you succed with three stones do you do one or three stones of damage? Or maybe you need to win three times in a row but it doesn't sound right. If it is the something like the first how does it work when there is only one stone of differnce between wound and trick. For example: if you can chose between one stone of damage or disarming your opponent I know which choice I would take.
3: How is it working out when every person on average has 9 stones in energy? Does it make a difference at all?
I kind of expected to recieve some replies to my questions above. Anyway I have completed my own set of marvel - star wars conversion rules. The work began when I found whitewings solutions a bit unclean. My project then grew from that so I can't say it's cleaner or anything, it may even be worse. I cannot say which one is better but I did made this system for myself so this is the one I'm going to play. I present this as an alternative. The conversion is presented as a full document but you should feel free to rip it apart as you see fit if there is just a small part you like or dislike. And as a final note I beg you to comment and critizise.