Here is why I don't care about occluded e's.
I reworked my handwriting a few years ago using the Sassoon Better Handwriting book. this involved analyzing and diagnosing problems areas with my handwriting and then reworking my hand on different levels. One of the basic principles is illustrated below. Legibility is NOT about the "perfect" formation of your letters. It is about
differentiation of your letter forms within a writing rythym.

So when I analyzed my handwriting my e's never came up as the problem. Why? because the e's look enough diffent from i's that occlusion really isn't an issue. In the example below you can see that "depreciation", "income", "indirectly", "provide", "itself" are all words with different variations of i and e, and frankly the two don't look alike (ok, the first e in "depreciation" is probably the closest, but still not mistakeable).

Part of the reason for that is because I based the hand on an italic form rather than a "cursive" form which frankly makes differentiation tougher for many letters. In my examples, the i's emphasizes a straight descender, more than my e's. Because the italic is based upon the first "zig zag" above a straight downstroke with a join to the next that is much more angular, the e's are differentiated, not in their loop, but in their join. Look at the first i and the e in "indirectly" and you can see the contrast.
If you are a Palmer cursive person, well then you're dissadvantaging yourself as you have a tougher time differentiating. Note the Palmer letterforms below. The i and e are only differentiated in the loop. In fact, palmer relies on the swoops and loops for differentiation. This is probably the biggest reason I stopped using the cursive form. It really isn't as legible isn't as forgiving for poor letter forms. If you are a beautiful palmer script person, then you have no reason to change, but if not, then consider it.

I know it's turned into a commercial for italic, but I've really found that it is a great form for everyday handwriting. There is a reason that italic was the key form of the pre-printing reinassance. It is faster, more legible, more fault tolerant.
Note, the italic also allows me to have a wide range of nib sizes and keep legibility. Yes, witha big nib, the script gets bigger, but it stays legible. examle below contrasts the two with my ItaliFine nib. My biggest nib is a Sailor Zoom, and even though my writing is bigger and EVERYTHING is occluded with it, it's still legible.