score:22
Christians, in general, do not believe that Jesus' name is 'magic', in the sense that if you say the word your prayer is somehow more effective. The exact version of the name used is not therefore important. "In my name", as Jesus says, can mean a number of things including "with my authority" and "in accordance with my wishes".
It's true that Yeshua is probably a better rendition of the original name than Jesus. However the confusion of changing it - unless you have a good reason - would probably outweigh the advantages.
The only denomination that I know of that uses Yeshua on a regular basis are the Messianic Jews, particularly Jews for Jesus. That's because the name Yeshua is already familiar to many of them, so it isn't nearly as much of a disconnect. It also emphasizes Jesus' Jewishness.