Hello there! Might I interest you with empatheias? It's a decent-sized game in a steampunk-ish setting where characters' emotions manifest in and affect the world around them. There's typically little to no power nerfing, as well. There's currently a sizeable Fate/ cast (mostly FGO, but we would love characters from other installments in the franchise too!) and it's pretty backtag-friendly as a whole so activity is easy to meet as long as you have a couple new threads each month.

Apps for the month are actually currently open and close on the 4th, with the app page being here if you want to check that out. There are monthly test drives posted in the second half of the month (current one is here) and the game does do reserves, though since apps are already open that might be a bit of a moot point right now.