I ran ES_Scraper myself from the setup script two nights ago, and let it go to work on the 2000 ROMs I have installed. Took ages, but it too downloaded a variety of sizes for each one. Some perfect, meeting the 350px size, but many that were huge and cause browsing to be slowed right down.
Contemplating running it manually on each rom directory one by one, forcing the 350px limit using one of the variables in the script. Is this a wise course of action? Or am I going to have to settle in for a long time of scraping again?