I play more with spin than flat, but not in a Nadal kind of loopy way. I play with a SHBH which I try to play with more spin (worked better with the Prestige S).
In rally's I start from outside of the baseline, but I try to get more on or inside the baseline. I play mostly doubles and I like playing at the net.
Maybe I'm just looking for a similar racket with a (slighty) larger stringbed. Please let me know if you have any suggestions.
I'm not "just like you", but your story has some familiar elements to it. I owned a pair or LM Radicals a few years ago, but I switched into those from some significantly heavier frames that also had more head-light (HL) balance. I initially loved the feel and control I got with the Radicals, but I also do a lot of business up at the net. That sort of play has given me a deep appreciation for a racquet with enough heft to feel stable against the ball, especially when the pace heats up.
Aside from the loss of stability with the Radicals, I also missed the maneuverability of my old gear - these were well over 12 oz. with around 10 pts. HL balance (ProStaff 6.1 Classics). Because the Radicals were both lighter and more flexible than my Wilsons, they eventually gave me the impression that they were significantly less powerful, too. Even with lead tape added to the hoop and the handle, I couldn't get comfortable with these Heads after not quite a year of working with them.
I now keep a couple different "10-series" mid-plus Volkls in my bag and they've been very good to me. I also hit a one-handed backhand, so I love having enough beef in my racquet to propel it through the ball when I hit that stroke. Not the case with a softer, lighter Radical or even a stiffer Pure Drive or AeroPro Drive, etc. You could consider trying something that's both a bit heavier, but also more HL, just so that it's not unwieldy. My favorite doubles racquet is my Organix 10 325g, which I've customized to my liking, but the current Super G 10 comes in two versions; a 325g and a 295g. I'm 49 and I've found every Volkl I've either owned or sampled to be kind to my arm, but I'm also not much of a poly user.
My other thought is to try an oversize Radical - TW is still selling the MG Radical Oversize for about $90 (nice!!!). The bigger string bed ought to be a little more inherently lively than your dense patterned mid-plus, but it's a Radical and should probably give you a familiar vibe along with a grip shape that you already know. I've had a quick look at both the Graphene Radical and Radical Pro, but those newer frames are a bit of a departure from Heads older Radicals like your MG - much more stiff. That could be good for power, but bad for control. You'd only know once you take one for a ride.
