Thinking that e or a look anything like E or A is entirely down to your first language using the Latin alphabet (I'm making an assumption but I can't think of any other way they would look similar).
I've done language conversation exchanges with Japanese English learners and the characters really are completely different to someone learning them for the first time.
へ is virtually identical to ヘ visually. Most of the katakana and hiragana pairs derive from the same kanji and share visual similarities, especially if you’re familiar with Chinese calligraphy. So what?
I've done language conversation exchanges with Japanese English learners and the characters really are completely different to someone learning them for the first time.