Welcome! We had a 2022 22MLE for 1.5 years (purchased June 2021), then opted to get a 2023 23LDE (purchased Jan 2023). At the time we purchased the 22MLE, the LDE wasn't released yet and had we known it was coming we would have waited.
We liked the MLE very much. The main issues were; we didn't like the door being at the foot of the bed. Not fun getting up in the middle of the night and stepping on the front rug and having sand stick to your feet. Walking into the front door and always having the bed right there. I go out the door early in the morning with my coffee and wife is still in bed, right there. Very small bathroom, less than 2' square in front of toilet, cabinet, and shower. Makes it difficult for a tall or wide person to get dressed after a shower. I had to face the shower otherwise, I there wasn't enough room to get my pants on.
The LDE is a bit longer, vastly larger bathroom, bedroom separation, larger sofa. Heavier with same suspension so you lose cargo carrying capacity. Personally, I wouldn't go back to the MLE after having the LDE.
Regarding towing, the LDE is significantly heavier on the tongue, mainly due to the fact that the shower and toilet are in front of the axles, whereas the tanks are all behind the axles on the MLE. The fresh water on the LDE is over and slightly behind the rear axle and the galley is at the very back. But assuming you use the bathroom while traveling you will almost always have something in those tanks. I installed an off-grid system with 4 - 280AH batteries. The tongue weight was higher than stated on our paperwork before we loaded anything. With the things I've added, we're running nearly 17% on the tongue. On this trip to Alaska for the summer we recently found that the A-frame is now distorted and cracked (that will be a separate post at some point). Not saying you'll have the issue, just a point to consider your trucks payload and potential tongue weight of the LDE vs MLE.
Most likely you'll be very happy with whichever model you choose. Have fun exploring them and with your purchase!