Change to thumb keys

Hello all!! I was just writing as I am a long time fan of the Naga Razer. I bought one many years ago and it was the greatest thing, up until I bought the wireless version. My wireless mouse has recently been intermittent, and I am looking for a replacement so I came back to Naga but I am having a problem. The thumb keys for the new Naga mice are raised higher, and they are also tilted. I have tried other mice like this in the past and I hate it!! I like the old Nagas with the flat keys on the side as I find them so much easier and better to use. I just want to know why apparently all new mice now have the raised and tilted thumb keys?? Why can't you include one set of keys that are flat and one that are tilted for those like me that prefer the flat keys?? I love my Naga items, and I would love to get another mouse, but until the keys get fixed in some way I won't be buying one. Maybe it's just me I'm not sure, I just don't understand why a mouse that was awesome got replaced with something more than sub-optimal instead of having both in one way or another.