hello, inechoing silence
let me ask you a question: how much deep-reading and critiquing of others' work have you undertaken?
the reason i ask is because it's a great teacher. it enables you to look back at your own work with new eyes, having had to make determinations about exactly why you did or did not like a word, a phrase, a placement in another's poem. the more you read, the more you open your mind to all the differing styles out there, and the more open you are to seeing how to improve your own work because you are able to separate from it, read it as a reader, not as its creator.
now the editor you got the response from may have given you their honest appraisal; that's not to say a different editor might enjoy your choice of language in a whole other way, and he may well have been a bit of a tosser. i don't know. however, if you are submitting to a print publication, or even to an online one, it is ALWAYS a good idea to read up on the material they print. it'll help you decide whether or not your kind of writing is the sort they're looking for - and different 'zines look for very different material: some will only accept form poetry, others won't touch it with a barge-pole; some only want material that includes fluffy kittens, washing machine blues and mr rights in the frozen goods aisle... others are looking for strictly sexual, wham-bam-thanyou-ma'am writing. you get my drift.
write how you need to write and what demands to be written, but be aware that how you write now may differ enormously from the material you'll go on to produce years from now. it's a natural evolution due to learning and experience. i've always been fond of the obscure words, the flurry and energy and outright beauty of some of them... but if you are submitting to a 'zine or book then they'll only be interested in what their readership shows it wants to read. at the end of the cliched day, you must control the words and decide who you are writing for - if you expect someone else to cough up the pennies and print you. personally, i write what i want and see what might be a good fit when subbing rather than thinking about it before or during the writing process! my own writing styles have changed enormously, and i follow where they go.
so, a love of exotic (as others may list it but natural to you) language... something i've learned is that the very best poetry happens when the words disappear: you read or better yet write something that connects so directly, the words cease to exist, replaced by sensory input, emotional manipulation... the poem becomes an experience you are a part of and so become invested in it. that's when a reader cannot but help like a poem - they feel a part of it!