Re: EPS. I agree. What I found is, over the years, if you realllly had to convert a CDR to Illustrator, it might take a multi-prong approach and assemble the best bits form each way.
Yes, the "best" is exporting to Illustrator from CorelDraw.
The next best is exporting a high-res full PDF and opening that in Illustrator.
The worst (in my experience) was opening CDR in Illustrator. Too many objects did not come in.
But between the three, you might get all the pieces you need. The first two require having CorelDraw, of course, so you are very limited if all you have at your disposal is Illustrator's old import filter.
EPS is the fallback, but of course that requires flattening, (and can take forever to export) which will create a very complex file of many little bits, and color management issues, but it WILL look like the printed result. Still. not what you want to work with going forward.
Personally, for the complex CDR, I would separate the true vector items (like text that needs edits, etc) from the more illustrative parts, then render that portion as a bitmap and make a base layer out of that.
In my role as a pre-press guy, what we would often do with supplied files is literally export them as a high-res (600 dpi) TIF from CorelDraw and be done with it! 🙂
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