Ok, let's start that I copied a character with really low amount of credits (some around half million) to make those tests more "annoying".
Now Your questions: Do you find yourself having to repair more or less often?
I have tendency to click "Repair All" every time I visit a vendor, so I didn't notice difference - need more testing. When you repair, does the cost increase seem significant or fair?
Taking into a count, that I started with really low amount of credits, the increased repair cost is way too high (Blue IR 336). Do the Quick Travel costs seem fair? Do you think this will affect your usage of Quick Travel?
No! Do not implement them to Live Server! I will definitely use them less that I use them now (on Live Server).
This change will only make the game harder for new / poor players while rich will not even notice it. Are there travel costs that you currently find to be too little or too much?
For SH, as stated here is ok.
For "from planet to planet", looks fine (as long as they are same as on Live Server at this moment - didn't checked that). Are there methods of travel that have no cost that you would expect to have a cost?
No comment.
Now my question:
What will have priority, planetary travel cost or Legacy perks that remove that cost?
Example: I go from Korriban to my SH on Yavin and then decide I want do some missions on Yavin and I exit to Yavin. As stated here, I will have to pay for that, but, at same time, I have Legacy perk that removes travel cost to Yavin.
And for last but not least, I will repeat myself (regardless I really hate to do so):
Do not implement Quick Travel Punishment to the Live Server.
PS. Sorry for my horrible english, it's not my native language.