Are Ohm Walsh's a step up from Martin Login Electro Motion ESL's

Ohms are going to be very different in presentation from the MLs -- you know that, right? Panel electrostatics have a narrow, focussed sweet spot, while omnis like the Ohms have a more spacious sound. What is better will be a matter of taste.

You could call Ohm and talk to John Strohbeen and get his views. He’s a really good guy.

I agree that placement of one speaker in a corner is not optimal. I am not so sure that that’s worse for an omni than for a panel speaker. It might be. It might not. Ask John what he thinks. Even better, rearrange your whole home and life to position the speakers more symmetrically. 😉

Btw if it were me I would want to try some isolation pad under the MLs 
 

any recommendations?  I have them on spikes.  But would would try pads.  

Auralec Subdude just make sure big enough for those MLs. Available off Amazon not expensive and should be returnable. I’m thinking it would help clean up bass that can also Obscure midrange detail if needed. Hardwood floor coverings especially on suspended plywood floor structure common with upper levels of many homes can be rough acoustically. Carpet on floor in front of speakers can also help if needed.

check my system pics that show my ohm 100s with 8" drivers on Auralec Subdude pads in family room on second level of my house  

Corner placement boosts bass. With Ohm Walsh probably a small model maybe even microwalsh may be best. You could add a sub at location of your choice if even needed. Run it by the folks there they have a good rep as straight shooters and won’t try to sell you something you don’t need.

A true omni is not an ideal recommendation for that room if the positioning is that close to wall, and because of the corner. The man would have to treat the corner, which could screw up the M/T. It might be a different story if the room could be rearranged and the speakers moved out further. YMMV

How about for a start you not toe in the ML speakers. You’re complaining about how narrow the sweet spot is, but you have them toed in. So, change it and put them parallel to the head wall. Obviously this will open up the center image, but you’ll have perhaps enough size for two to listen. You’re not going to get much out into the room at all with those speakers. You would need a different genre.