OOC: Absolutely, totally forbidden.
I mean the site is an Atlantian city of Shamblers. I don't believe it giving access to recruitable Ettins is WAI (working as intended). Indeed, it was probably intended to give you access to Consort Queens or that priest Atlantian that you get on that mercenary group. Exploiting the 0g commander/thug chassis is gamey.
For now, can the Ettins and leave them in your capital, I'd say. Or kill them off creatively. An alteration site giving a discount to wish still has very high barriers to use (the paths, the initial gems, etc.).
FYI, other "gamey" actions which are not allowed include flooding a nation who has just put up Forge of the Ancients with 40 magic trinkets, etc. Use your own judgement, and if you believe it might be questionable, ask.
IC: Hey, this map
is like Europe, and scaly lizardmen are located in Scandinavia! Hey, we want our oil and lutefisk back.
