From my experience with HEN, having plugins like webman or sman bring more freezes than running 4.84 HEN stock. So I'm just using PS3HEN 2.3.1 and Irisman to load the games I want.
I haven't tried the latest webman mod 1.47.25 yet, that it should bring less issues (e.g., incompatibility with multiman, and the fan control stuff), but for now as you said, I prefer to 'KISS'
btw, from what I recall about the original webman by Deank, you needed to edit some .XML file in order to show up in the XMB. So it was like a manual setup, not just uploading the server.sprx plugin. From the readme.txt:
* Edit your category_game.xml (/dev_blind/vsh/resource/explore/xmb/category_game.xml)