Possible Clues:

• Flood defence breached by Norse god
• A huge amount in park for The Boss, the lead from Oasis and Queen in Los Angeles
• God inspired by prayer a lot
• It means a great deal to domestic worker retiring over square or close to the sea
• More than enough to help working artist
• Abundance — help rota (anag)
• Appeal to restrict god's excess
• “Heap” and “lot” could be about right for this?
• A lot of prayer captivates god
• Flood defence god with hammer will breach