LEt me try a littLE test.

My middLE finger stays at E key whiLE my index finger reach for L key. That twists my hand a bit, which is not good.

Your way to move the hand is correct. If your finger is long, you can use a palm rest to change the distance from key to finger.

Here are the metrics for my fingers:
Middle finger: 11.8cm total, 8.7cm from bottom crease;
Index finger: 10.9cm total, 7.9cm from bottom crease.
How long are your fingers?
Resting my middle finger on the upper half of the E key feels better indeed, but it's still a bit tricky for me. Maybe I'll get over the problem through more practice.

Then this layout may be interesting to you:

; C E W V Z F O L X
I S U T D H N A R Y
 Q J G M K P B , .

(Note: hit G with left index, as you would hit Colemak M with right index)

According to the keyboard layout analyzer at patorjk.com, it has a lower same-finger ratio and slightly less hand alternation than Colemak. It does a good job at balancing hand usage despite having E ant T on the same hand. The corpus used in the test is not very large, though.
OA is a fairly uncommon digraph with a frequency comparable to that of WR, SW, OG, PY, TC, LV... so it's perfectly safe to bind the letters together. The most frequent same-finger digraph here is probably RL (~0.1%).

Nevertheless, I probably won't go through the pain of rebuilding my muscle memory again. Neither will you, I know :)
However I'm not impressed with how Colemak deals with C as the Ctrl+ZXCV shortcuts don't matter much to me.

Actually it's my own work, designed by hand during boring classes :)

The home row Y is indeed a problem. Here is an improved version:

X C E W V Z F O Y J
L S U T D H N A I R
 Q ; G M K P B , .

And it resolves the R/L conflict too! See the test results at patorjk's layout analyzer, tested on the first 3 chapters of Pride and Prejudice:
http://patorjk.com/keyboard-layout-anal … d/sX6XlM2g

I have the 4 least frequent letters XJQZ moved to make 'qu', 'ize', 'dizzy', 'ject', 'jump' etc. more comfortable to type. I don't think it's too bad anyway.

Perhaps I'll swap M with W to type the Unix command 'mv' easier.

Finally... the most terrible thing about this layout is that it won't help me with papers in my native language - Chinese!