#4: I can make you a moderator here. Then you can make any changes you want.
”A different angle” would work.
”To” is not needed in that sentence. What you wrote is like “här kan jag inte göra en del av de korrigeringar jag vill”. If you added ”to” in the end it would be ”här kan jag inte göra en del av de korrigeringar jag vill göra”.
It is more appropriate to use anotherwhen referring to an additional noun.
Would you like another cup of coffee?
It is more appropriate to use an otherwhen talking about a different noun.
I looked at Leo and we shrugged at one an other.
Nowadays, another is used in both examples much more frequently. I looked at the Corpus (which I'll make a definition post later for). An other is used 170 times in Contemporary American English. Another is used 35478 times.
#4 As Niklas said "to" is not needed. However, it is perfectly fine and also correct to say.