My Desire belongs to my significant other since I bought One X 
She is not a demanding user. She browses, reads local news, listens some music, plays some games, uses various messanging softwares.
Battery is important to her.
Eventually, internal memory ran out, so she wants me to help her.
I S-OFFed her phone few days a go (using revolutionary), installed custom recovery (CWM), and rooted it.
I also have read a lot in this forum (because it is rather silent in One X forum these days
), including how to partition SD card and how to set up EXT4 partition (I guess I will use EXT4 recovery for it, although I have downloaded gparted, too).
:angel:
What I would like to know is:

Thanks in advance...
She is not a demanding user. She browses, reads local news, listens some music, plays some games, uses various messanging softwares.
Battery is important to her.
Eventually, internal memory ran out, so she wants me to help her.
I S-OFFed her phone few days a go (using revolutionary), installed custom recovery (CWM), and rooted it.
I also have read a lot in this forum (because it is rather silent in One X forum these days
:angel:
What I would like to know is:
- Is it possible to dedicate EXT4 partition on SD card as extention to internal memory in stock ROM? How can I do that?
- How can I delete not needed HTC applications from system and/or data (strange, but SD Maid Pro doesn't work)? What damage can I cause? How much memory can I release that way?
- Which ROM I can try, having in mind stability, and battery? Which super lite ROM you would recommend?
Thanks in advance...